Schlage ND73 Grade 1 Corridor,...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$873.62
$550.38
Schlage ND73 Grade 1 Corridor, Cylindrical Lock, Rhodes Lever, FSIC (Schlage Full Sized IC), Less Core, 2-3/4" Backset

Schlage ND73 Grade 1 Corridor, Cylindrical Lock, Rhodes Lever, FSIC (Schlage Full Sized IC), Less Core, 2-3/4" Backset

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Model: ND73-JD-RHO-626
From the ND-Series Collection
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$873.62
$550.38
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Schlage ND73 Grade 1 Corridor, Cylindrical Lock, Rhodes Lever, FSIC (Schlage Full Sized IC), Less Core, 2-3/4" Backset

Schlage Lock Company ND Series

Beyond grade 1 performance is the hallmark of the mechanical and electrified ND series locks. These locks are put through extreme levels of testing and are proven to withstand 3,100 in-lb. of abusive lever torque-more than 2-1/2 times the grade 1 standard requirement. Offset lever pull testing up to 1,600 lbs. assures you of the lock’s superb resistance against pry bar attacks. More than strong, ND series is built to last and shows nearly zero droop or wobble after 16 million cycles. All ND series locks including electronic functions, ligature-resistant trims, and ground-breaking, high-visibility status indication trims use the common cylindrical ANSI 161L door preparation making them easily interchangeable. They are ideal for all new construction and retrofit applications where grade 1 strength and security are desired.

Features:

  • No access with minimum 3,100 in-lbs of lever torque (2.6x BHMA, for general abuse)
  • No access with minimum 1,600 lbs of offset lever pull (8x BHMA, for pry-bar attacks)
  • No access with minimum 100 vertical impacts (20x BHMA, for sledgehammer attacks)
  • Near-zero droop and wobble beyond 16 million cycles (after 16x BHMA) – without the use of set screws or O-rings
  • Latch retraction with up to 200 pound preload (4x BHMA) for confident operation in warped and preloaded doors
  • Cast steel spindle construction exceeding 16 million cycles
  • Withstood aggressive Schlage development testing including lever-snap and abusive cycling
  • 31 mechanical functions
  • 6 wired functions with:
    • Autodetecting 12-24V DC input
    • Switch-selectable EL/EU operation
    • Modular request to exit (RX)
    • 0.230A max/0.010A holding current
  • Available in 10 finishes, 5 lever designs, and 2 rose designs
  • Multiple key systems available – open, patented, restricted, geographic exclusive, UL437
  • Support for 10 non-Schlage cylinders including Best, Corbin Russwin, Medeco, Sargent and Yale
  • Certifications: Exceeds BHMA A156.2 requirements for grade 1 cylindrical locks. Exceeds BHMA A156.25 requirements for indoor electrified locks.

 

Specifications:

  • Material: Modular design of zinc and steel components plated for corrosion protection
  • Door thickness: Standard: 1-5⁄8" (41 mm) to 2-1⁄8" (54 mm) Optional: 1-3⁄8“ (35 mm) - 6" (152 mm) EE, EO, EI, ED configurations
  • Handing: Non-handed
  • Backset: Standard: 2-3⁄4" (70 mm). Optional: 2-3⁄8", 3-3⁄4”, 5” (60, 92, 127 mm)
  • Latch bolt: Standard: 1⁄2" (12 mm) throw spring latch or deadlatch (stainless steel). Optional: 3⁄4" (19 mm) throw anti-friction deadlatch available for pairs of doors
  • Strike: Standard: ANSI curved lip: 1-1⁄4" x 4-7⁄8" x 1-3⁄16" (32 mm x 124 mm x 30 mm). Optional: T Strike, ANSI strikes with alternative lip lengths, dust box options.
  • Keying Formats:
    • Standard: 6-pin Conventional cylinder with two patented keys
    • Optional: FSIC, SFIC, and 7-pin SL cylinder formats plus less cylinder options made to fit non-Schlage cylinders from Best, Corbin Russwin, Medeco, Sargent and Yale.
  • Access security:
    • Standard: 6-pin, patented Everest 29 S123 keyway
    • Optional: Open, restricted, Primus, master keying, and construction keying
  • Input voltage: Autodetecting 12-24V DC, +/- 10%
  • Operating mode: Fail safe or fail secure via switch on chassis
  • Current draw: 0.23 amps maximum; 0.01 amps holding
  • Request to Exit: Modular - 3A @ 125VAC / 2A @ 30VDC
  • Wired electrified:
  • Warranty: 10years mechanical, 1 year wired electrified.

 

Lever Styles:

  • ATH: Athens Width: 4.56". Projection: 3.31"
  • BRK: Boardwalk Width: 4.94". Projection: 3.06"
  • BRW: Broadway Width: 4.50". Projection: 3.06"
  • LAT: Latitude Width: 4.50". Projection: 3.13"
  • LON: Longitude Width: 4.94". Projection: 3.13"
  • OME: Omega Width: 5.06". Projection: 3.31"
  • RHO: Rhodes Width: 4.56". Projection: 2.94"
  • SPA: Sparta Width: 4.94". Projection: 3.50"
  • TLR: Tubular Width: 4.94". Projection: 3.00"
  • Rose Standard: Diameter: 3.44"
  • Return to door meets 1⁄2" requirement for Boardwalk (BRK), Longitude (LON), Omega (OME), Rhodes (RHO), Sparta (SPA) and Tubular (TLR) levers.

 

Mechanical Non-Keyed Functions:

  • ND10: Passage latch
    • ANSI F75
    • Levers both sides; springlatch
    • Latch retracted by lever from either side at all times
    • Inside lever always free for immediate egress
  • ND12: Exit lock
    • ANSI F89
    • Levers both sides; deadlatch
    • Outside lever always fixed; latch retracted by inside lever
    • Inside lever always free for immediate egress
  • ND25: Exit lock with exterior blank plate
    • Blank plate outside; lever inside; deadlatch
    • Latch retracted by inside lever
    • Inside lever always free for immediate egress
  • ND30: Patio lock
    • ANSI F77
    • Lever outside; push button in lever inside; springlatch
    • In unlocked state latch is retracted by either lever
    • Outside lever is made inoperative by pushing button on inside lever
    • Rotating inside lever retracts latch and releases button unlocking outside lever; closing door also unlocks preventing lockout
    • Inside lever always free for immediate egress
  • ND40: Bath/bedroom privacy lock
    • ANSI F76
    • Lever with emergency release recessed slot outside; push button in lever inside; springlatch
    • In unlocked state latch is retracted by either lever
    • Outside lever is made inoperative by pushing button on inside lever
    • Rotating inside lever retracts latch and releases button unlocking outside lever; closing door also unlocks preventing lockout
    • Emergency unlock: an emergency key (sold separate) or small, flat screwdriver inserted in outside lever and turned releases button to unlock
    • Inside lever always free for immediate egress
    • Note: Locks ordered with indicator trim fit 1-3/4" doors. Sold separate spacer kits allow application to doors 1-3/8" to 1-11/16".
    • To order an emergency key use part number 35-270
  • ND44: Hospital privacy lock
    • Emergency turn in lever outside; push button in lever inside; springlatch
    • In unlocked state latch is retracted by either lever
    • Outside lever is made inoperative by pushing button on inside lever
    • Rotating inside lever retracts latch and releases button unlocking outside lever; closing door also unlocks preventing lockout
    • Emergency unlock: rotating emergency turn in outside lever releases button to unlock
    • Inside lever always free for immediate egress
    • Note: Locks ordered with indicator trim fit 1-3/4" doors. Sold separate spacer kits allow application to doors 1-3/8" to 1-11/16".
  • ND45: Time out lock with Vandlgard
    • Spring-loaded push button in lever outside; lever inside; springlatch
    • In unlocked state latch is retracted by either lever
    • Caretaker side:pushing and holding button enables Vandlgard® feature; detention side lever will rotate without engaging latch
    • Releasing manually held button enables inside lever to re-engage with latch and open the door
  • ND170: Single dummy trim
    • Fixed lever one side only; no latch or chassis
    • Used for door pull or matching inactive trim
  • ND172: Double dummy trim
    • Fixed levers-both sides; no latch or chassis
    • Used for door pull or matching inactive trim
    • Note: Latch cover plates available. Order part number 47269199.

 

Mechanical Keyed Functions:

  • ND25 x 70: Classroom exit lock
    • ANSI F113
    • Blank plate outside; lever with cylinder inside; deadlatch
    • In unlocked state latch is retracted by inside lever
    • Outside always secure; inside lever is made inoperative by key inside
    • Key inside retracts latch and unlocks inside lever
  • ND25 x 80: Storeroom exit lock
    • ANSI F112
    • Blank plate outside; lever with cylinder inside; deadlatch
    • Outside always secure; inside lever is always fixed
    • Key inside retracts latch but does not unlock lever
  • ND50: Entrance/office lock
    • ANSI F82
    • Lever with key cylinder outside; push button in lever inside; deadlatch
    • In unlocked state latch is retracted by either lever
    • Outside lever is made inoperative by pushing button on inside lever; key outside does not lock
    • Key outside or rotating inside lever retracts latch and releases button unlocking outside lever
    • Inside lever always free for immediate egress
    • Note: Locks ordered with indicator trim fit 1-3/4" doors. Sold separate spacer kits allow application to doors 1-3/8" to 1-11/16".
  • ND53: Entrance lock
    • ANSI F109
    • Lever with key cylinder outside; push/turn button in lever inside; deadlatch
    • In unlocked state latch is retracted by either lever
    • Outside lever is made inoperative by pushing button or pushing and turning button on inside lever; key outside does not lock
    • Pushed button unlocking: key outside or rotating inside lever retracts latch and releases button unlocking outside lever Pushed/turned button unlocking: key outside or rotating inside lever retracts latch but does not unlock outside lever; rotate inside button to start position to allow button release and unlocking by key or by rotating inside lever
    • Inside lever always free for immediate egress
    • Caution: Egress without fully releasing the push/turn button can result in lock-out situations.
    • Note: Locks ordered with indicator trim fit 1-3/4" doors. Sold separate spacer kits allow application to doors 1-3/8" to 1-11/16".
  • ND60 with XN12-001: Vestibule lock with interior unlocking only
    • Lever outside; lever with key cylinder inside; deadlatch
    • In unlocked state latch is retracted by either lever
    • Outside lever is locked or unlocked by key inside
    • Inside lever always free for immediate egress
  • ND70: Classroom lock, exterior lockdown only
    • ANSI F84
    • Lever with key cylinder outside; lever inside; deadlatch
    • In unlocked state latch is retracted by either lever
    • Outside lever is locked or unlocked by key outside
    • Inside lever always free for immediate egress
  • ND73: Corridor lock
    • ANSI F90
    • Lever with key cylinder outside; push button in lever inside; deadlatch
    • In unlocked state latch is retracted by either lever
    • Outside lever is made inoperative by pushing button on inside lever or by key outside
    • When locked by pushed button: rotating inside lever retracts latch and releases button unlocking outside lever; closing door also unlocks preventing lock-out When locked by key: rotating inside lever retracts latch but outside lever remains fixed until unlocked by key outside
    • Inside lever always free for immediate egress
  • ND80: Storeroom lock
    • ANSI F86
    • Lever with key cylinder outside; lever inside; deadlatch
    • Outside lever always fixed; latch retracted by inside lever
    • Key in outside lever retracts latch only
    • Inside lever always free for immediate egress
  • ND81: Accessible storeroom lock
    • ANSI F86
    • Lever with key cylinder outside; lever inside; deadlatch
    • Outside lever is always fixed when key is not present; latch retracted by inside lever
    • Key outside turned counter-clockwise retracts latch; 180-degree clockwise rotation of key allows outside lever to retract latch
    • Inside lever always free for immediate egress
  • ND85: Faculty restroom lock
    • ANSI F93
    • Lever with conventional indicator cylinder outside; push button in lever inside; deadlatch
    • Entrance by key only; outside lever always fixed; latch retracted by inside lever
    • Push button on inside lever activates a locking pin that extends from the cylinder face to prohibit use of operating keys and indicate that the room is in use
    • Turning inside lever or closing door releases the locking pin and push button to allow normal use of operating keys
    • Emergency unlock: use of an emergency key (sold separate) is required to override the locking pin and unlock from the outside when push button is activated
    • Inside lever always free for immediate egress
    • Note: Available with Conventional KIL indicator cylinder only. To order a spanner key to enable lockout feature use part number 35-251.
    • To order an emergency key use part number 35-102.
  • ND91: Vandlgard entrance/office lock
    • ANSI F82
    • Lever with key cylinder outside; push button in lever inside; deadlatch
    • In unlocked state latch is retracted by either lever
    • Outside is made inoperative by pushing button on inside lever; key outside does not lock, Vandlgard allows outside lever to rotate freely when locked
    • Key outside or rotating inside lever retracts latch and releases button unlocking outside lever
    • Inside lever always free for immediate egress
    • Note: Locks ordered with indicator trim fit 1-3/4" doors. Sold separate spacer kits allow application to doors 1-3/8" to 1-11/16".
  • ND92: Vandlgard entrance lock
    • ANSI F109
    • Lever with key cylinder outside; push/turn button in lever inside; deadlatch
    • In unlocked state latch is retracted by either lever
    • Outside lever is made inoperative by pushing button or pushing and turning button on inside lever; key outside does not lock, Vandlgard® allows outside lever to rotate freely when locked
    • Pushed button unlocking: key outside or rotating inside lever retracts latch and releases button unlocking outside lever Pushed/turned button unlocking: key outside or rotating inside lever retracts latch but does not unlock outside lever; rotate inside button to start position to allow button release and unlocking by key or by rotating inside lever
    • Inside lever always free for immediate egress
    • Caution: Egress without fully releasing the push/turn button can result in lock-out situations.
    • Note: Locks ordered with indicator trim fit 1-3/4" doors. Sold separate spacerkits allow application to doors 1-3/8" to 1-11/16".

 

Mechanical Keyed Functions:

  • ND94: Vandlgard classroom lock, exterior lockdown only
    • ANSI F84
    • Lever with key cylinder outside; lever inside; deadlatch
    • In unlocked state latch is retracted by either lever
    • Outside lever is locked or unlocked by key outside; Vandlgard allows outside lever to rotate freely when locked
    • Inside lever always free for immediate egress
  • ND96: Vandlgard storeroom lock
    • ANSI F86
    • Lever with key cylinder outside; lever inside; deadlatch
    • Outside lever always inoperative; Vandlgard allows outside lever to rotate freely when locked
    • Key in outside lever retracts latch only
    • Inside lever always free for immediate egress
  • ND97: Vandlgard corridor lock
    • ANSI F90
    • Lever with key cylinder outside; push button in lever inside; deadlatch
    • In unlocked state latch is retracted by either lever
    • Outside lever is made inoperative by pushing button on inside lever or by key outside; Vandlgard allows outside lever to rotate freely when locked
    • When locked by pushed button: rotating inside lever retracts latch and releases button unlocking outside lever; closing door also unlocks preventing lock-out When locked by key: rotating inside lever retracts latch but outside lever remains fixed until unlocked by key outside
    • Inside lever always free for immediate egress

 

Mechanical Keyed, Double Cylinder Functions:

  • ND60: Vestibule lock
    • ANSI F88
    • Lever with key cylinder both sides; deadlatch
    • In unlocked state latch is retracted by either lever
    • Outside lever is made inoperative by key inside; key outside does not lock
    • Key outside retracts latch but cannot unlock outside lever; only key inside unlocks
    • Inside lever always free for immediate egress
    • Note: Available with optional instruction rose identifying key rotation direction for rapid lockdown. 626 finish only.
    • To order with instruction rose specify function and note XN12-035 as a special option
  • ND66: Store lock
    • ANSI F91
    • Lever with key cylinder both sides; deadlatch
    • In unlocked state latch is retracted by either lever
    • Key in either lever locks or unlocks both levers
    • Caution: Double cylinder locks on any door, in any structure which is used for egress are a life safety hazard in times of emergency and their use is not recommended. Installation should be in accordance with existing codes only.
  • ND70 x 80: Classroom by storeroom lock
    • Lever with key cylinder both sides; deadlatch
    • In unlocked state inside lever is always fixed; latch retracted by outside lever
    • Outside lever is locked or unlocked by key outside; key inside retracts latch but does not unlock either lever
    • Caution: Double cylinder locks on any door, in any structure which is used for egress are a life safety hazard in times of emergency and their use is not recommended. Installation should be in accordance with existing codes only
  • ND72 with XN12-002: Communicating lock
    • ANSI F80
    • Lever with key cylinder both sides; deadlatch
    • In unlocked state latch is retracted by either lever
    • Key in either lever makes inoperative only that lever
    • Key in either lever retracts the latch and unlocks only that lever
    • Caution: Double cylinder locks on any door, in any structure which is used for egress are a life safety hazard in times of emergencyand their use is not recommended. Installation should be in accordance with existing codes only.
    • To order, specify function and note XN12-002 as a special option.
  • ND72 with XN12-003: Vandlgard communicating lock
    • ANSI F80
    • Lever with key cylinder both sides; deadlatch
    • In unlocked state latch is retracted by either lever
    • Key in either lever makes inoperative only that lever; Vandlgard allows locked lever to rotate freely when locked
    • Key in either lever retracts the latch and unlocks only that lever
    • Caution: Double cylinder locks on any door, in any structure which is used for egress are a life safety hazard in times of emergency and their use is not recommended. Installation should be in accordance with existing codes only.
    • To order, specify function and note XN12-003 as a special option.
  • ND78: Classroom security lock (180-degree lockdown)
    • ANSI F110
    • Lever with key cylinder both sides; deadlatch
    • In unlocked state latch is retracted by either lever
    • Outside lever is made inoperative by rotating key in either lever 180 degrees counterclockwise and returning to start position
    • Unlock outside lever by rotating key 180 degrees clockwise in either lever and returning to start position
    • Inside lever always free for immediate egress
    • Locks ordered in 626 finish come standard with instruction rose (47342586) identifying key rotation direction for rapid lockdown. Other finishes receive a standard rose.
    • Note: Locks ordered with indicator trim fit 1-3/4" doors. Sold separate spacer kits allow application to doors 1-3/8" to 1-11/16".
  • ND82: Institution lock
    • ANSI F87
    • Lever with key cylinder both sides; deadlatch
    • Both levers are always fixed
    • Key in either lever retracts latch only
    • Caution: Double cylinder locks on any door, in any structure which is used for egress are a life safety hazard in times of emergency and their use is not recommended. Installation should be in accordance with existing codes only.
  • ND93: Vandlgard vestibule lock
    • ANSI F88
    • Lever with key cylinder both sides; deadlatch
    • In unlocked state latch is retracted by either lever
    • Outside lever is made inoperative by key inside; key outside does not lock; Vandlgard allows outside lever to rotate freely when locked
    • Key outside retracts latch but cannot unlock outside lever; only key inside unlocks
    • Inside lever always free for immediate egress
    • Note: Available with optional instruction rose identifying key rotation direction for rapid lockdown. 626 finish only.
    • To order with instruction rose specify function and note XN12-035 as a special option.
  • ND98: Vandlgard classroom security lock (180-degree lockdown)
    • ANSI F110
    • Lever with key cylinder both sides; deadlatch
    • In unlocked state latch is retracted by either lever
    • Outside lever is made inoperative by rotating key in either lever 180 degrees counterclockwise and returning to start position; Vandlgard allows outside lever to rotate freely when locked
    • Unlock outside lever by rotating key 180 degrees clockwise in either lever and returning to start position
    • Inside lever always free for immediate egress
    • Locks ordered in 626 finish come standard with instruction rose (47342586) identifying key rotation direction for rapid lockdown. Other finishes receive a standard rose.
    • Note: Locks ordered with indicator trim fit 1-3/4" doors. Sold separate spacer kits allow application to doors 1-3/8" to 1-11/16".

 

Finishes:

  • 605/US3 - Bright brass
  • 606/US4 - Satin brass
  • 612/US10 - Satin bronze
  • 613/US10B - Oil rubbed bronze
  • 619/US15 - Satin nickel
  • 622/US19 - Matte black
  • 625/US26 - Bright chrome
  • 626/US26D - Satin chrome
  • 626AM - Satin chrome, antimicrobial
  • 643e/716 - Aged bronze

Manufacturer Resources

Product Specs

Series:
ND Series
Grade:
Grade 1
Duty Level:
Heavy Duty
Handle Type:
Lever
Keyed Function:
Double Cylinder
Standard Latch:
13-247: Deadlatch - 2-3/4" Backset - Square corner, 1-1/8" x 2-1/4"
Standard Strike:
10-025: ANSI, no box, 1-1/4" x 4-7/8" (1-3/16" Lip length)
Subcategory:
Cylindrical Lever Locks
ANSI/BHMA:
F110
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Leversets
Keyed:
Yes
Electronic:
No
Commercial/Residential:
Commercial
Function Description:
Both levers fixed. Entrance by key in either lever.
Lock Type:
Cylindrical
Lock Function:
Classroom Security (180-Degree Lockdown)
Product Attribute:
Cylindrical Locks
IMAP Policy:
Yes
Product Model:
ND78
Collection:
ND-Series
Product Function:
Classroom Security
Door Hand Direction:
Non-Handed
Product Substrate:
Zinc and Steel
Product Category:
Mechanical Locks
Department:
Door Hardware

Schlage ND73-JD-RHO-626 – Frequently Asked Questions

1) How does the Schlage ND78 classroom security lock work during a lockdown?
The ND78 is a double cylinder classroom security lock with 180-degree lockdown, ANSI F110. There's a key cylinder in both levers. Rotating the key 180 degrees counterclockwise in either lever and returning it to start makes the outside lever inoperative; 180 degrees clockwise unlocks it again. That means a teacher can lock the corridor side from inside the room without opening the door. The inside lever is always free for immediate egress.
2) What cylinders and keyways can I get in a Schlage ND lock, and can it match my existing key system?
Standard is a 6-pin conventional cylinder in the patented Everest 29 S123 keyway with two keys. FSIC, SFIC and 7-pin SL formats are available, along with less-cylinder versions prepped to accept non-Schlage cylinders from Best, Corbin Russwin, Medeco, Sargent and Yale, so the lock can be brought into a key system you already run. Open, restricted, Primus, master keying and construction keying are all offered. Note the ND78 takes a cylinder in both levers.
3) Which Schlage ND function should I pick for a classroom, ND70 or ND78?
ND70 (ANSI F84) is the traditional classroom lock: a cylinder outside only, so the teacher has to step into the corridor to lock the door. ND78 (F110) is the classroom security version with a cylinder in both levers and a 180-degree lockdown, so the door is secured from inside the room. If you want the outside lever to spin freely rather than stay rigid when locked, the Vandlgard equivalents are ND94 for the classroom function and ND98 for classroom security.
4) Can I run a double cylinder ND lock on an exit door?
Be careful here. Schlage flags double cylinder locks on any door used for egress as a life safety hazard and does not recommend them, with installation only where existing codes allow. The ND78 classroom security function is the exception in that group: the inside lever stays free for immediate egress at all times, which is why it is the one specified for occupied classrooms. Functions like ND66 store, ND82 institution and ND70 x 80 keep both levers fixed and carry that caution.
5) What is the closest equivalent to the Schlage ND78 classroom security lock from another manufacturer?
The Dexter C1000 Series classroom security cylindrical lever lock is the nearest match. Both are Grade 1 cylindrical lever locks with a classroom security function. The Dexter C1000 classroom security model uses a clutching keyed lever and lists a 1-3/8 inch to 1-3/4 inch door thickness range. The Schlage ND78 is a double cylinder classroom security lock with a 180-degree lockdown, meaning the key rotates 180 degrees in either lever to lock or unlock the outside lever, and it is non-handed.
6) If the opening only needs to be locked from the outside with a key, what should be used instead of a classroom security lock?
A standard classroom function lock is the simpler choice when lockdown from inside the room is not required. The Dexter C1000 Series classroom cylindrical lever lock is a Grade 1 keyed classroom function with a clutching lever and a 1-3/8 inch to 1-3/4 inch door thickness range, and the Cal-Royal AG03 is a Grade 2 classroom lever with a 6-pin Schlage C keyway, keyed different, on a 2-3/4 inch backset. The Schlage ND78 differs in that it carries cylinders in both levers so a teacher can lock the corridor side without stepping into the hallway.
7) Is a storeroom lever lock a valid substitute for the Schlage ND78 on a classroom door?
It is not an equivalent. A storeroom lock such as the Cal-Royal AG05, a Grade 2 storeroom lever with a deadlocking latchbolt on a 1-3/8 inch to 1-3/4 inch door, or the Hager 2580 Grade 2 storeroom cylindrical lock with Withnell lever, keeps the outside lever fixed at all times and the key only retracts the latch. The Schlage ND78 is a classroom security function with 180-degree lockdown, where the outside lever is normally free and is locked or unlocked by key from either side. If the room needs to be left unlocked during class and secured quickly, the storeroom function will not do it.
8) Is the ND78 handed, or can one lock go on any classroom door?
Non-handed. The ND series cylindrical lock installs on left or right hand doors without reversing anything, so a school or facility can stock a single part number across every classroom opening.
9) What Grade 1 lever lock matches the Schlage ND78 for the non-keyed doors on the same corridor?
For passage openings finished to the same Grade 1 level, the Falcon K101 is a Grade 1 heavy duty passage cylindrical lock with non-handed levers, a 1-3/8 inch to 2-1/4 inch door thickness range and a fire rating; the Corbin Russwin CL3110 is a Grade 1 vandal resistant passage lever for 1-3/4 inch to 2 inch doors, also fire rated; and the Design Hardware X75 is a Grade 1 passage lever lockset with a flat lever for 1-3/4 inch doors. The Schlage ND78 itself is the keyed double cylinder classroom security member of the heavy duty ND Series.
10) What should go on a door where both levers must stay locked at all times, rather than a Schlage ND78?
That is an asylum or institution function. The Dexter C1000 Series asylum lock is a Grade 1 cylindrical lock in the F87 function for 1-3/8 inch to 2 inch doors, and the Arrow MK33-BD-CS is a Grade 2 asylum lock with a ball knob and a conventional cylinder in the Schlage C keyway. The Schlage ND78 leaves the inside lever free for immediate egress and is the F110 classroom security function, so it is the wrong choice where both sides must remain fixed.
11) Are Grade 2 entrance levers like the Hager 2525 or Falcon B511CP6D an alternative to the Schlage ND78?
They serve a different opening. The Hager 2525 is a Grade 2 commercial cylindrical entry lock with a lever handle for 1-3/8 inch to 2 inch doors, and the Falcon B511CP6D is a Grade 2 medium duty entry/office lever. Entrance and office functions lock by pushbutton on the inside and the key outside does not lock, so there is no keyed lockdown. The Schlage ND78 is a Grade 1 heavy duty double cylinder lock whose key locks the outside lever from either side.
12) Can Yale or Accentra lever hardware be keyed into the same Schlage system as the ND78?
The Accentra 107S is a Schlage cylinder adapter kit for Yale hardware, which is how Yale-brand trim is brought onto a Schlage cylinder. On the Schlage side, the ND78 is offered less cylinders so the cylinder format is chosen to suit the existing key system. Several Cal-Royal levers, such as the AG00 entrance lever with a 6-pin Schlage C keyway on a 2-3/8 inch backset, are furnished in the Schlage C keyway directly.
13) For an electrified opening tied to access control, what takes the place of the Schlage ND78?
The Corbin Russwin CL33903 is a Grade 1 fail safe electrified cylindrical lever lock at 12VAC/DC for 1-3/4 inch to 2 inch doors, offered with an NZ lever and D rose. The Schlage ND78 is a mechanical lock with no electrified function, so an opening that must release on a card reader or fire alarm signal needs the electrified lock rather than the key-operated classroom security function.
14) Will a Grade 3 residential lever such as a Kwikset or Callan hold up on a school corridor door?
Those are built for lighter service. The Kwikset 200BRNL Breton passage lever and 300BRNL Breton privacy lever are Grade 3 for 1-3/8 inch to 1-3/4 inch doors, and the Callan Artino entrance leverset and Asheville passage leverset are Grade 3 as well. The Schlage ND78 is Grade 1 heavy duty commercial with a zinc and steel body, which is the level typically specified for classroom and corridor traffic.
15) Why do some ND78 locks come with a different rose?
Locks ordered in 626 satin chrome come with the instruction rose, part 47342586, which marks the key rotation direction for a rapid lockdown. Other finishes get the standard rose, 3.44 inch diameter. The ND series is offered in ten finishes total, from bright brass 605 through matte black 622, oil rubbed bronze 613, aged bronze 643e and the antimicrobial 626AM.
16) What matching dummy trim pairs with a Grade 1 lever lock like the Schlage ND78 on an inactive leaf?
The BEST 9K Series 1DT single dummy trim is a Grade 1 non-keyed heavy duty cylindrical lever dummy, and the Accentra 455LN Augusta is a Grade 1 heavy duty single dummy cylindrical lever. For a lighter opening the BEST 7KC Series single dummy trim is Grade 2 medium duty. The Schlage ND78 itself is the keyed working half, a Grade 1 cylindrical lever lock.
17) Is there a keyless option instead of the Schlage ND78 for a room that needs controlled access without issuing keys?
Yes. The Delaney LP250 is a Grade 2 electronic keypad leverlock, the Lockey 1150 is a heavy duty mechanical keypad lever set with double combination in passage function for 1-1/8 inch to 2 inch doors, and the Emtek Classic keypad leverset is a coded lever option. The Schlage ND78 is a mechanical, non-electronic Grade 1 lock operated by key in either lever.
How fast can I get the Schlage ND73-JD-RHO-626 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Schlage ND73-JD-RHO-626 come with a warranty?
Absolutely. The Schlage ND73-JD-RHO-626 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Schlage ND73-JD-RHO-626?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Schlage ND73-JD-RHO-626 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.

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