Corbin Russwin Grade 1 Classro...
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$1,022.09
$535.70
Corbin Russwin Grade 1 Classroom Newport Cylindrical Lever, Large Format IC 6-Pin Prep with Disposable Plastic Core, (Less LFIC CR8000 Core), 2-3/4in Backset, ANSI Strike SA114

Corbin Russwin Grade 1 Classroom Newport Cylindrical Lever, Large Format IC 6-Pin Prep with Disposable Plastic Core, (Less LFIC CR8000 Core), 2-3/4in Backset, ANSI Strike SA114

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Model: CLX3355-NZD-626-CT6D
$1,022.09
$535.70
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In Stock (leaves warehouse same day if ordered before 3pm ET)

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Corbin Russwin CLX3355-NZD-626-CT6D Grade 1 Classroom Newport Cylindrical Leverset with Status Indicators, Large Format IC 6-Pin, 2-3/4" Backset

CLX3300 Series Cylindrical Lock with Visual Status Indicators for Enhanced Security and Privacy

The Corbin Russwin CLX3355-NZD-626-CT6D is a Grade 1 Classroom Newport Cylindrical Leverset from the CLX3300 Series, engineered to deliver style, security, and enhanced privacy for both new construction and retrofit projects. Featuring six customizable indicator windows that provide instant at-a-glance visibility of the door's locked or unlocked status on the inside, outside, or both sides of the door, this leverset is purpose-built for high-traffic classrooms, restrooms, and any environment where safety and privacy are critical. Designed for doors with a 2-3/4" (70mm) backset and a standard door thickness range of 1-3/4" to 2" (44mm to 51mm), it requires a minimum stile of 4-1/2" (114mm) and features a stainless steel deadlatch with a 1/2" (13mm) throw. The unit ships with a Large Format IC 6-Pin Prep and Disposable Plastic Core (Less LFIC CR8000 Core) and includes an ANSI Strike SA114, making it a complete, ready-to-install classroom security solution.

Professional Features & Benefits

  • Visual Status Indicators: Six customizable indicator windows provide instant visibility of the door's lock status from the inside, outside, or both sides of the door for complete visual assurance at all times.
  • Door Compatibility: Designed for a 2-3/4" (70mm) backset with a 1-1/8" (29mm) front (standard), accommodating door thicknesses of 1-3/4" to 2" (44mm to 51mm) and a minimum stile of 4-1/2" (114mm).
  • Exceeds ANSI/BHMA Grade 1 Standards: Surpasses ANSI/BHMA A156.2 Grade 1 requirements for strength and durability, ensuring long-term reliable performance in high-traffic commercial applications.
  • UL/cUL Listed for 3-Hour Fire Doors: Certified for use on 3-hour fire-rated doors, supporting life-safety compliance in demanding commercial environments.
  • ADA-Compliant Levers: Newport lever design meets ADA accessibility requirements, ensuring easy operation for all building occupants.
  • Non-Handed, Simplified Installation: Non-handed design installs on any door regardless of swing direction, reducing installation time and eliminating handing errors for new construction or retrofit applications using a standard bored lock door prep.
  • Large Format IC 6-Pin Prep: Ships with a Disposable Plastic Core (Less LFIC CR8000 Core), supporting large format, small format, and conventional cylinder formats with 6-pin or 7-pin configurations for flexible keying options.
  • Master Keying Capability: Can be master keyed or grand master keyed; construction key systems are also available for phased project security management.
  • Durable Latchbolt Construction: Stainless steel deadlatch with a 1/2" (13mm) throw; front available in wrought brass, bronze, or stainless steel measuring 2-1/4" x 1-1/8" (57mm x 29mm) standard for the 2-3/4" backset.
  • Patented Design: Corbin Russwin's patented CLX3300 Series design provides a unique combination of security, privacy, and status visibility not found in standard cylindrical locks.

Technical Specifications

  • Subcategory: Cylindrical Locks
  • Product Group: Mechanical Locks
  • Series: CLX3300 Series
  • Grade: Grade 1
  • Keyed Function: Single Cylinder
  • Lock Function Description: Deadlocking latchbolt by key in outside lever or by rotating inside lever. Lever handle is freewheeling in locked position. Inside lever always free.
  • Standard Cylinder: Conventional 6-pin Cylinder, L4 Keyway
  • Standard Latch: Deadlatch - Square corner front, 2-1/4" x 1-1/8", 2-3/4" backset
  • Standard Strike: ANSI Curved Lip 1-1/4" Lip Length
  • Product Subgroup: Bored Locksets
  • Product Type: Leversets
  • Keyed: Yes
  • Commercial/Residential: Commercial
  • Lock Type: Cylindrical
  • Handle Type: Lever
  • Lock Function: Storeroom/Closet
  • Product Attribute: Cylindrical Locks
  • Product Model: CLX3355
  • Product Function: Classroom
  • Door Hand Direction: Non-Handed
  • Door Thickness Range: 1-3/4" to 2"
  • Fire Rating: Yes
  • Product Category: Mechanical Locks
  • Product Substrate: Steel, Zinc dichromated for corrosion resistance
  • Backset (Distance): 2-3/4"
  • Department: Door Hardware

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness (1-3/4" to 2"), minimum stile width of 4-1/2" (114mm), and 2-3/4" backset boring as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and/or frame surfaces for the standard bored lock door prep.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions, accommodating flat doors and doors beveled 1/8" in 2" (3mm in 51mm).
  4. Install all mounting hardware and secure the cylindrical leverset to the door per manufacturer torque specifications, noting the non-handed design requires no handing adjustment.
  5. Install the ANSI Strike SA114 on the door frame, aligning with the deadlatch for proper engagement; the ANSI curved lip strike measures 4-7/8" x 1-1/4" x 1-1/4" (124mm x 32mm x 32mm) lip to center.
  6. Insert the appropriate LFIC core (CR8000 Series, sold separately) into the Large Format IC prep and configure master keying or construction key system as required.
  7. Test device operation to verify proper latchbolt function, status indicator visibility, and smooth lever operation throughout the full range of motion. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • K-12 and Higher Education Classrooms
  • Healthcare Facility Patient Rooms and Restrooms
  • Commercial Office Buildings
  • High-Traffic Public Restrooms
  • Government and Municipal Buildings
  • Retail Establishments
  • Multi-Tenant Residential and Mixed-Use Properties

Why Choose Corbin Russwin Quality?

Corbin Russwin CLX3300 Series cylindrical locks exceed ANSI/BHMA A156.2 Grade 1 standards and carry UL/cUL listing for 3-hour fire doors, delivering a level of performance and certification that goes beyond the minimum requirements for commercial door hardware. The patented status indicator design, ADA-compliant Newport levers, and steel substrate with zinc dichromate corrosion resistance reflect a commitment to durability and accessibility in demanding environments. Engineered for both new construction and retrofit applications, Corbin Russwin cylindrical leversets provide the professional-grade reliability that architects, contractors, and facility managers depend on.

Product Specs

Subcategory:
Cylindrical Locks
Product Group:
Mechanical Locks
Series:
CLX3300 Series
Grade:
Grade 1
Keyed Function:
Single Cylinder
Lock Function Description:
Deadlocking latchbolt by key in outside lever or by rotating inside lever. Lever handle is freewheeling in locked position. Inside lever always free.
Standard Cylinder:
Conventional 6-pin Cylinder, L4 Keyway
Standard Latch:
Deadlatch - Square corner front, 2-1/4" x 1-1/8", 2-3/4" backset
Standard Strike:
ANSI Curved Lip 1-1/4" Lip Length
Product Subgroup:
Bored Locksets
Product Type:
Leversets
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Cylindrical
Handle Type:
Lever
Lock Function:
Storeroom/Closet
Product Attribute:
Cylindrical Locks
Product Model:
CLX3355
Product Function:
Classroom
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/4" to 2"
Fire Rating:
Yes
Product Category:
Mechanical Locks
Product Substrate:
Steel, Zinc dichromated for corrosion resistance
Backset (Distance):
2-3/4"
Department:
Door Hardware

Corbin Russwin CLX3355-NZD-626-CT6D – Frequently Asked Questions

1) Does the Corbin Russwin CLX3355 come with a core, or do I need to order one separately?
It ships with a Large Format IC 6-pin prep and a disposable plastic core, which means there is no working cylinder in the box. You add a CR8000 Series LFIC core, ordered separately, and key it into your system. The plastic core lets the door function during construction before the permanent core drops in.
2) Will the CLX3355 classroom lever fit a 1-3/4 inch door with a 2-3/4 inch backset?
Yes. The CLX3355 is built for a 2-3/4 inch backset and door thicknesses from 1-3/4 to 2 inches, which covers standard commercial doors. It also needs a minimum stile of 4-1/2 inches, so check narrow aluminum stiles before ordering. If your doors are bored 2-3/8 inch, this is the wrong backset.
3) How does the classroom function on this Corbin Russwin lever actually work day to day?
Key in the outside lever retracts the deadlocking latchbolt, and the inside lever is always free for egress. In the locked state the outside lever freewheels rather than binding, so forcing it does not damage the mechanism. Staff lock and unlock the outside lever with a key; nobody gets trapped inside.
4) Can I use this Corbin Russwin lever on a 3-hour fire rated classroom door?
Yes. The CLX3355 is UL/cUL listed for 3-hour fire doors, and the deadlocking latchbolt with a 1/2 inch throw is what does the latching work on a fire opening. That listing is why it clears life-safety review in schools and healthcare corridors.
5) What strike and latch come with the Corbin Russwin CLX3355, and will they work in my existing frame?
It includes the ANSI SA114 curved lip strike, 4-7/8 x 1-1/4 x 1-1/4 inches with a 1-1/4 inch lip length, plus a stainless steel deadlatch with a square corner front measuring 2-1/4 x 1-1/8 inches for the 2-3/4 inch backset. If your frames are already prepped for ANSI 4-7/8 strikes, it drops in. Frames with a small T-strike cutout need re-prep or a different strike.
6) What is the closest Grade 1 classroom cylindrical lever to the Corbin Russwin CLX3355 from another manufacturer?
The Dexter C1000 Series classroom cylindrical lever lock (DEX-C1000-CLRM) is the closest peer: it is also a Grade 1 keyed classroom-function cylindrical lever with a clutching lever. The difference to check before you swap is door thickness. The CLX3355 is built for doors 1-3/4 inch to 2 inch, while the Dexter C1000 classroom is rated 1-3/8 inch to 1-3/4 inch, so on a 2 inch door the Corbin Russwin is the one that fits. The CLX3355 also carries the CLX3300 Series visual status indicator windows and a 2-3/4 inch backset with an ANSI curved lip strike.
7) We need a classroom lever but not a Grade 1 heavy commercial spec - what is a lighter option?
The Cal-Royal AG03 is a Grade 2 classroom lever with a 6-pin Schlage C keyway keyed different and a 2-3/4 inch backset, so it matches the CLX3355 on backset and classroom function at a lighter duty level. The Corbin Russwin CLX3355 is Grade 1, ships with a Large Format IC 6-pin prep for CR8000 cores rather than a fixed Schlage C cylinder, and adds the status indicator windows. If your keying is already on a Schlage C system, the Cal-Royal drops in without a core order; if you key to Corbin Russwin, the CLX3355 is the match.
8) Is a storeroom lever an acceptable substitute for the CLX3355 on a classroom door?
They behave differently at the outside lever. The CLX3355 is a classroom-function lock whose outside lever is freewheeling when locked and is unlocked by key, with the inside lever always free. The Cal-Royal AG05 is a Grade 2 storeroom lever with a deadlocking latchbolt, and the Hager 2580 is a Grade 2 storeroom lever with a Withnell lever for doors 1-3/8 inch to 2 inch. A storeroom lever keeps the outside lever locked at all times and requires the key on every entry, so it is not a match where staff need the door left unlocked during the day.
9) What is the difference between the CLX3355 and a classroom security lock?
The Dexter C1000 classroom security lever (DEX-C1000-CSEC) is a Grade 1 clutching keyed lock in classroom security function, which is keyed on both sides so the door can be locked down from inside the room without opening it. The Corbin Russwin CLX3355 is standard classroom function with a single cylinder: key in the outside lever only, inside lever always free, with indicator windows showing locked or unlocked status. If your lockdown procedure requires keying from inside the classroom, classroom security is the function to spec.
10) Do I need to specify handing for the CLX3355 leverset?
No handing to specify. It is non-handed and installs on a left or right swing without field conversion, so a property manager stocking spares only needs one part number across the building. It suits flat doors or doors beveled 1/8 inch in 2 inches.
11) What do the indicator windows on the CLX3300 Series lever tell you?
Six customizable indicator windows show at a glance whether the door is locked or unlocked. You can configure visibility on the inside, outside, or both faces, which is the point in a classroom or restroom where someone needs to confirm status without testing the lever.
12) Can the CLX3355 be master keyed into an existing Corbin Russwin system?
Yes. It can be master keyed or grand master keyed, and construction key systems are supported for phased jobs. The prep accepts large format, small format and conventional cylinders in 6-pin or 7-pin, with the standard conventional cylinder being a 6-pin L4 keyway.
13) Is a Grade 1 classroom lever overkill, or should I use a Grade 2 for a school corridor?
For high-traffic classroom and corridor doors, Grade 1 is the durability tier worth paying for, and the CLX3355 exceeds ANSI/BHMA A156.2 Grade 1 on a steel body with zinc dichromate corrosion protection. If the opening is lower traffic and budget led, ZenSupply carries Grade 2 classroom levers such as the Cal-Royal AG03, which also uses a 2-3/4 inch backset with a 6-pin Schlage C keyway.
14) What should I use on the same corridor for a door that does not need to be keyed?
For a non-keyed opening alongside CLX3355 classroom doors, the Falcon K101 is a Grade 1 heavy duty passage cylindrical lock with non-handed levers, fire rated, and covers doors 1-3/8 inch to 2-1/4 inch. The Design Hardware X75 is another Grade 1 passage lever, for 1-3/4 inch doors. Both are passage function only - no cylinder, no lock status - whereas the CLX3355 is keyed with a single cylinder and a deadlocking latchbolt operated by key in the outside lever.
15) Can I use a keypad lever instead of the CLX3355 to avoid issuing keys?
Mechanical keypad levers such as the Lockey 2835 and the Lockey 1150 heavy duty keypad lever set remove the key entirely and use a pushbutton combination; both are passage-function keyless levers. The Delaney LP250 is a Grade 2 electronic keypad leverlock. Those are code-entry devices, not ANSI classroom-function locks - the CLX3355 is a Grade 1 keyed classroom lever that can be master keyed or grand master keyed on a CR8000 large format IC system, which is what most schools standardizing a facility key hierarchy are after.
16) Will a residential-grade lever work in place of the CLX3355 in a school corridor?
No. Options like the Kwikset 200BRNL Breton passage lever and the Kwikset 300BRNL Breton privacy lever are Grade 3 and built for doors 1-3/8 inch to 1-3/4 inch, and the Master Lock BC Series keyed entry lever is also Grade 3. The Corbin Russwin CLX3355 is Grade 1 commercial, UL/cUL listed for 3-hour fire doors, with a steel zinc dichromated substrate, which is the specification corridor and classroom openings in institutional buildings are written to.
17) What is a good match for a restroom door next to CLX3355 classroom openings?
For a public restroom that needs an outside key override but no daily locking by staff, the Arrow MK33-BD-CS is a heavy duty asylum function lock with a conventional Schlage C keyway cylinder, and the Dexter C1000 asylum (F87) is a Grade 1 asylum-function cylindrical lock for doors 1-3/8 inch to 2 inch. For a single-occupancy restroom, the Hager 2540 is a Grade 2 privacy cylindrical lock with a Withnell lever. The CLX3355 itself is classroom function with indicator windows and is commonly used on restrooms where status visibility is wanted.
18) Are the Newport levers on this Corbin Russwin lock ADA compliant?
Yes. The Newport (NZD) lever design meets ADA accessibility requirements, so it operates without tight grasping or wrist twisting. The lever is finished in 626 satin chrome.
19) I need matching inactive trim on a pair of classroom doors - what goes with the CLX3355?
For an inactive leaf you need dummy trim, not a bored lock. 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 single dummy cylindrical lever. Dummy trim is surface-applied with no latch and no cylinder, so it cannot secure anything - the CLX3355 with its 2-3/4 inch backset deadlatch and ANSI curved lip strike is what carries the active leaf.
20) Is the Falcon T101 an alternative to the CLX3355?
Only for openings that do not need to be keyed. The Falcon T101 is a Grade 1 heavy duty cylindrical passage lever with pressure release technology, and the Falcon B101 is a Grade 2 medium duty non-handed passage lever - both are passage function, meaning the levers always retract the latch. The Corbin Russwin CLX3355 is keyed, non-handed, and its outside lever is locked and freewheeling until a key is used, which is what a classroom opening requires.
How fast can I get the Corbin Russwin CLX3355-NZD-626-CT6D 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 Corbin Russwin CLX3355-NZD-626-CT6D come with a warranty?
Absolutely. The Corbin Russwin CLX3355-NZD-626-CT6D 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 Corbin Russwin CLX3355-NZD-626-CT6D?
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 Corbin Russwin CLX3355-NZD-626-CT6D 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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