Hager 3550 Series Grade 2 Entr...
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$287.01
$129.08
Hager 3550 - 3500 Series Grade 2 Entrance Office Cylindrical Lock, Non-Handed

Hager 3550 Series Grade 2 Entrance Office Cylindrical Lever Lock with Multiple Backset Options

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Model: 3550 WTN US26D
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$287.01
$129.08
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Hager 3550 Series Grade 2 Entrance Office Cylindrical Lever Lock with Multiple Backset Options

Professional Commercial-Grade Cylindrical Lock Solution

The Hager 3550 Series Grade 2 Entrance Office Cylindrical Lock delivers reliable commercial security with flexible installation options. This non-handed cylindrical lock accommodates door thicknesses from 1-3/8" to 2" and offers multiple backset configurations including 2-3/4", 2-3/8", 3-3/4", and 5" options. BHMA Grade 2 certified to ANSI A156.2 Series 4000 standards with UL/cUL listing for up to 3-hour fire rating applications.

Professional Features & Benefits

  • Flexible Door Compatibility: Accommodates door thickness range of 1-3/8" to 2" with multiple backset options (2-3/4", 2-3/8", 3-3/4", 5") for versatile installation requirements.
  • Heavy-Duty Construction: Heavy gauge steel lock chassis with zinc dichromate coating provides corrosion resistance and long-term durability in commercial applications.
  • Security Features: Deadlocking latchbolt with 1/2" throw prevents manipulation when door is closed, featuring stainless steel construction for enhanced security.
  • Professional Certifications: BHMA Grade 2 certified to ANSI A156.2 Series 4000, UL/cUL listed for 3-hour fire rating, ADA compliant, and ANSI A250.13 severe windstorm compliant.
  • Keying Flexibility: Standard Schlage C keyway with 6-pin cylinder drilled and 5-pin keyed configuration, plus optional SFIC core compatibility and various keying options.
  • Professional Installation: Non-handed design with removable thru-posts and no exposed mounting screws for clean, professional appearance and simplified installation.
  • Lever Options: Available with Archer, August, and Withnell lever designs to match architectural requirements and aesthetic preferences.
  • Lifetime Warranty: Comprehensive lifetime warranty coverage provides long-term protection and confidence in commercial applications.

Technical Specifications

  • Applications: Standard Duty Commercial
  • Backsets: 2-3/4" (70mm)
  • Certifications: ADA Compliant ANSI A117.1 Accessibility Code
  • Commercial/Residential: Commercial
  • Cylinder and Keyways: Schlage C - Standard, other keyways optional
  • Door Strike: ASA Strike
  • Door Thickness: 1-3/8" - 2" (35 mm - 51 mm)
  • Exposed Trim: Wrought brass, Bronze, and Stainless steel
  • Finishes: US3, US4, US10B, US26, US26Dand BLK
  • Functions: Single Cylinder
  • Grade: Grade 1
  • Handle Type: Lever
  • Keyed: Yes
  • Lever Options: Archer, August and Withnell
  • Lock Chassis: Heavy gauge steel, zinc dichromated for corrosion resistance. Thru-posts are removable. Failure to install thru-posts and screws voids BHMA certification, UL rating, and warranty
  • Lock Type: 1/2" (13 mm) throw, stainless steel
  • Notes: No exposed mounting screws
  • Options: Lead Lining
  • Rose Diameter: 3-11/32" (85 mm)
  • Strikes: 1-1/4" x 4-7/8" (32 mm x 124 mm) ASA strike
  • Subcategory: Cylindrical Locks
  • Warranty: Lifetime

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness (1-3/8" to 2"), backset selection (2-3/4", 2-3/8", 3-3/4", or 5"), and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for the selected backset configuration.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions for the chosen backset and door thickness.
  4. Install all mounting hardware including removable thru-posts and secure the device to door and frame per manufacturer torque specifications to maintain BHMA certification and UL rating.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion, ensuring deadlocking latchbolt engages properly.
  6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose Hager Quality?

Hager 3550 Series cylindrical locks deliver professional-grade reliability with heavy gauge steel construction and zinc dichromate corrosion protection. BHMA Grade 2 certification to ANSI A156.2 Series 4000 standards ensures consistent performance in demanding commercial applications. Lifetime warranty coverage and UL/cUL fire rating certification provide added confidence for critical security installations.

Product Specs

Warranty:
Lifetime
Keyed Function:
Single Cylinder
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Leversets
Subcategory:
Cylindrical Locks
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Cylindrical
Handle Type:
Lever
Grade:
Grade 1
Product Attribute:
Cylindrical Locks
Product Model:
3550
Product Function:
Entrance/Office
Door Thickness Range:
1-3/8" - 2"
Keyway Profile:
Schlage C - Standard
Door Strike:
ASA Strike
Product Category:
Mechanical Locks
Backset (Distance):
2-3/4"
Department:
Door Hardware

Hager 3550 WTN US26D – Frequently Asked Questions

1) What backset does the Hager 3550 lever lock use, and will it hit my existing 2-3/4 inch bore?
The 3550 is specified at a 2-3/4 inch backset, which is the common commercial cross-bore centerline, so it lands on doors already prepped that way. Hager also builds the 3550 in 2-3/8 inch, 3-3/4 inch, and 5 inch backsets, so a door with a deeper stile prep is covered too. Measure from the door edge to the center of the existing 2-1/8 inch bore and order to match.
2) Do I have to specify left or right hand when ordering the Hager 3550?
No handing to call out. The 3550 is a non-handed cylindrical lock, so one part number works on a left or right hand door and you can stock a single item across a building.
3) Will the Hager 3550 latch into the strike already in my frame?
It ships for an ASA strike, 1-1/4 x 4-7/8 inches, with a deadlocking latchbolt at 1/2 inch throw in stainless steel. If your frame already has the standard ASA (T-strike) cutout, the 3550 drops straight in. Frames prepped for a smaller full-lip or round-corner residential strike will need the opening enlarged or a filler plate.
4) Can the Hager 3550 be keyed into an existing Schlage C master key system?
Schlage C is the standard keyway on the 3550, supplied with a 6-pin cylinder drilled and keyed 5-pin, so it drops into an existing Schlage C system. Other keyways are available on request, and the lock also accepts an SFIC core if the building is standardized on small format interchangeable cores. It is a single cylinder keyed function, keyed outside with free egress inside.
5) Is the Hager 3550 lever lock fire rated for a 3 hour door?
Yes, the 3550 is UL/cUL listed for use on openings rated up to 3 hours. One install condition matters: the thru-posts and screws must be fitted. Leaving them out voids the UL rating and the BHMA certification on the lock.
6) What is the closest cross-brand equivalent to the Hager 3550 entrance/office lever lock?
The Falcon B511CP6D is the nearest match on function and grade: it is a Grade 2 cylindrical lever lock in entrance/office function, the same function and grade the Hager 3550 carries. The Dexter C1000 entry/office lever is also an entrance/office cylindrical lever, but it is a Grade 1 lock rated for a 1-3/8 inch to 1-3/4 inch door, where the 3550 covers 1-3/8 inch to 2 inch doors. If the opening is a standard 1-3/4 inch commercial door and the spec calls for Grade 2 entrance/office, the Falcon B511CP6D lines up directly.
7) What entrance lever should I use instead if the door is thicker than 2 inches or the job calls for a heavy duty Grade 1 chassis?
The Hager 3550 covers doors from 1-3/8 inch to 2 inch. For a heavier duty cylindrical lever platform, the Falcon K series K101 is a Grade 1 heavy duty cylindrical lock listed for 1-3/8 inch to 2-1/4 inch doors with a fire rating, and the Falcon T101 is a Grade 1 heavy duty cylindrical lever. Both of those are passage function, so they hold the door latched without keying; for a keyed Grade 1 entry/office opening the Dexter C1000 entry/office lever is the keyed heavy duty alternative.
8) I need the same Schlage C keyway on a classroom or storeroom door in the same building. What matches the Hager 3550 keying?
The Hager 3550 uses a Schlage C keyway as standard with a single cylinder keyed function, so it keys alike with other Schlage C cylinders. Cal-Royal's AG series offers the AG03 classroom lever and the AG00 entrance lever, both 6-pin Schlage C keyway keyed different, and the AG05 is a Grade 2 storeroom lever with a deadlocking latchbolt on 1-3/8 inch to 1-3/4 inch doors. The Arrow MK33-BD-CS asylum lock is also a Schlage C keyway conventional cylinder if a utility or asylum function is needed on the same key system.
9) What looks like a substitute for a Hager 3550 but will not work on a keyed office door?
Several cylindrical levers share the look and the mounting family but not the function. The Hager 3550 is a keyed single cylinder entrance/office lock. The Falcon B101, Accentra 5301LN Augusta, Accentra 4601LN, and Arrow GL01 are all Grade 2 cylindrical passage levers that latch but never lock. The BEST 7KC single dummy trim and the Accentra 455LN Augusta single dummy are non-keyed trim with no latch at all, and the Baldwin Estate 5103 comes in passage, privacy, and half dummy versions. None of those accept a key cylinder, so they cannot secure an office door.
10) The opening needs classroom or storeroom control, not entrance/office. What replaces the Hager 3550?
The 3550 is an entrance/office function, where the outside lever can be locked and unlocked from inside. For classroom control, the Dexter C1000 classroom lever is a Grade 1 keyed clutching lever for 1-3/8 inch to 1-3/4 inch doors, and the C1000 classroom security version adds inside keyed control. Cal-Royal's AG03 is a Grade 2 classroom lever on a 2-3/4 inch backset, and the AG05 is a Grade 2 storeroom lever where the outside lever stays locked at all times.
11) Which lever locks besides the Hager 3550 carry a fire rating for a labeled opening?
The Hager 3550 is UL/cUL listed for up to a 3-hour fire rating. Among comparable cylindrical locks, the Falcon K101 Grade 1 heavy duty passage lever carries a fire rating, the Corbin Russwin CL3110 Grade 1 vandal resistant passage/closet lever is fire rated for 1-3/4 inch to 2 inch doors, and the Arrow MK02-TA privacy lock with Tudor knob is fire rated. If the labeled door needs keyed entrance/office control rather than passage or privacy, the 3550 is the one of that group that does it.
12) Does an entrance/office lever meet ADA for a public corridor?
The 3550 is a lever rather than a knob, and it is stated ADA compliant to ANSI A117.1, so it satisfies the accessible operating hardware requirement where a knob would not. That is the usual reason a facility swaps knob sets for levers on public-side doors.
13) What does the entrance/office function actually do at the door?
Entrance/office means the outside lever can be locked by pushbutton or turn, key retracts the latch from outside, and the inside lever always retracts the latch for free egress. It is the function for an office or tenant suite door someone locks behind themselves. If you need a door that stays locked outside at all times and cannot be left unlocked by a user, order a storeroom function instead, such as the Cal-Royal AG05 Grade 2 storeroom lever.
14) Which lever designs and finishes can I get on the Hager 3550?
Three lever designs, Archer, August, and Withnell, each available in five finishes: 605 bright brass, 606 satin brass, 613 satin bronze oil-rubbed, 625 bright chrome, and 626 satin chrome. Every lever design comes in all five, so you can match a building already standardized on 626 satin chrome and still pick the lever shape that suits the space. Exposed trim is wrought brass, bronze, or stainless steel depending on finish.
15) Is a Grade 2 cylindrical lock enough for an office building corridor, or do I need Grade 1?
Grade 2 to ANSI A156.2 Series 4000 is the standard-duty commercial tier, and it holds up on office, retail, and multi-tenant doors with normal traffic. Where the opening sees constant abuse, a stairwell, a school corridor, a hospital, step up to a Grade 1 heavy duty cylindrical lock such as the Dexter C1000 Series entry/office lever, which carries the same entrance/office function at Grade 1.
16) What is the rose diameter on the Hager 3550, and will it cover the holes left by my old lockset?
The rose measures 3-11/32 inches (85 mm) across. That covers a standard 2-1/8 inch cross bore with room to spare, and it hides the mounting hardware since the 3550 has no exposed screws on the outside. If the door you are retrofitting has larger scars from an oversized escutcheon plate, the round rose will not conceal them.
17) Is there a lead lined version of the Hager 3550 for an X-ray room?
Yes, lead lining is a factory option on the 3550, which is what a hospital or imaging suite needs so the lock prep does not create a radiation leak path through the door. Call it out on the order; it is not the standard build.
18) I need matching passage and privacy levers to go with a keyed Hager 3550 entrance lock. What else do I order?
The 3550 is the keyed entrance/office function only, so hall, closet, and bathroom doors need separate non-keyed sets. Matching function options in the same commercial cylindrical family include the Falcon B101 Grade 2 passage lever and the Accentra 5301LN Augusta Grade 2 passage lever; for dummy trim on an inactive leaf, the BEST 7KC Series single dummy is a Grade 2 option. Lever style and finish will not match Hager Archer, August, or Withnell exactly, so keep one brand per opening group where appearance matters.
19) What is a cheaper alternative to the Hager 3550 for a light-duty office door?
For a low-traffic interior office door where commercial Grade 2 is more than the job needs, the Cal-Royal AUS00 is a Grade 3 entrance/office lever with a solid brass forged body, rated for 1-3/8 to 1-3/4 inch doors. Note the narrower thickness range: it will not cover a 2 inch door the way the 3550 does. Staying at Grade 2 with a Schlage C keyway, the Cal-Royal AG00 entrance lever uses a 2-3/8 inch backset, so check your door prep before substituting.
20) Can I get the Hager 3550 as an electrified lock for an access control system?
No. The 3550 is a mechanical key-in-lever cylindrical lock, not an electrified one. For a card reader or access control tie-in on a cylindrical prep, use an electrified lever such as the Corbin Russwin CL33903 Grade 1 fail safe lever in 12VAC/DC, which fits 1-3/4 to 2 inch doors. For keyless entry without wiring, the Lockey 2835 mechanical pushbutton lever covers 1-3/16 to 2 inch doors.
21) Is a Grade 3 entrance lever an acceptable stand-in for the Hager 3550 on an office door?
They are different duty classes. The Hager 3550 is a Grade 2 lever for commercial use. The Cal-Royal AUS00 is a Grade 3 entrance/office lever with a solid brass forged body covering 1-3/8 inch to 1-3/4 inch doors, and the Callan Artino and Master Lock RL series return-style keyed entry levers are Grade 3 entrance locks. Grade 3 levers carry a lighter cycle and strength rating than Grade 2, so on a facility standard written to ANSI Grade 2 they will not satisfy the spec; on light-traffic interior office doors they are the simpler option in the same entrance family.
22) What should I use for the same office door if I want keypad entry instead of a key?
The Hager 3550 is a keyed lever on a Schlage C cylinder. If the goal is code entry rather than a key, the Delaney LP250 is a Grade 2 electronic keypad leverlock, and Lockey offers mechanical pushbutton lever sets: the 1150 and 1150S heavy duty keypad lever sets for 1-1/8 inch to 2 inch doors, and the 2835 and 2835DC keyless lever locks for 1 3/16 inch to 2 inch doors. The Emtek Classic keypad leverset is a further keypad option. The Lockey units are passage function, so the code releases the lever rather than driving a keyed cylinder.
23) Can I use the Hager 3550 where an access control system needs to release the lever electrically?
The 3550 is a mechanical keyed cylindrical lever with a single cylinder function; it has no electrified option. For an electrically controlled opening in the same cylindrical lever format, the Corbin Russwin CL33903 is a Grade 1 fail safe electrified cylindrical lever running 12V AC/DC on doors 1-3/4 inch to 2 inch, available with an NZ lever and D rose and in a keyed 12VAC/DC configuration. Fail safe means the lever unlocks when power is removed, which is the opposite behavior to a mechanically locked office lever.
24) Are the Emtek and Baldwin levers alternatives to the Hager 3550 on a commercial office door?
They serve a different purpose. The Hager 3550 is a commercial keyed entrance/office lever with an ASA strike. The Emtek Arts and Crafts and Hammered leversets and the Cortina Classic Brass leverset are sold as dummy pairs, and the Baldwin Estate 5103 half dummy comes in left hand and right hand versions - dummy trim is fixed decorative trim with no latch mechanism. They are what you order to match a look on a non-operating leaf or a closet face, not to secure an office door.
25) If the door gets an exit device instead of a cylindrical lock, what replaces the Hager 3550 lever?
The 3550 is a self-contained cylindrical lock that bores into the door. On an opening that takes a panic device, the lever becomes trim on the device rather than a lock: the Corbin Russwin 585F715 is a Grade 1 lock lever for the ED8000 pushpad exit device and the CL3300 cylindrical lock series, fitting doors 1-3/4 inch to 2 inch, and the Imperial USA ED-EL500HD is a heavy duty escutcheon lever trim in entry function for the ED-500 series. Neither is a standalone lock - they require the exit device they mount to.
26) I want a lever rather than a knob on the same kind of entrance lock. Which comparable products are knobs?
The Hager 3550 is a lever, which is what ADA-governed openings generally require. Several otherwise similar cylindrical locks are knob trim instead: the Arrow HK11-BB is a turn-pushbutton entrance cylindrical lock with a ball knob and conventional cylinder for 1-3/8 inch to 1-3/4 inch doors, the Arrow MK02-TA is a privacy lock with a Tudor knob, and the Arrow MK33-BD-CS asylum lock uses a ball knob. If the facility standard calls for lever operation, those knob versions are not a like-for-like swap.
27) The office door also needs a deadbolt. Is there a comparable that combines the two?
The Hager 3550 is a single cylinder cylindrical lever lock with a 1/2 inch throw deadlocking latchbolt; it is not a deadbolt. The Callan Bennett is a Grade 3 entrance leverset supplied as a deadbolt combo, which puts the lever and the deadbolt on one keyed set. That is a Grade 3 assembly, a lighter duty class than the Grade 2 3550, so on a commercial spec the usual approach is to pair the 3550 with a separately specified deadbolt rather than substitute the combo.
28) Can I use a Schlage cylinder adapter to key a different brand lever into the same system as the Hager 3550?
The Hager 3550 already runs a Schlage C keyway as standard, so it drops into a Schlage C system without an adapter. Where the other doors carry Yale hardware, the Accentra 107S is a Schlage cylinder adapter kit for Yale hardware, which is the piece that lets that hardware accept a Schlage cylinder. That keeps a mixed-brand building on one key rather than forcing a full changeover.
29) Will a Hager 3550 hold up on an exterior door in a coastal or windstorm zone?
The chassis is heavy gauge steel with a zinc dichromate coating for corrosion resistance, and the lock is stated compliant with ANSI A250.13 for severe windstorm applications. That combination is what a spec on a hurricane-zone opening asks for.
30) For a multi-family or residential-grade opening, what is the lighter alternative to the Hager 3550 lever?
The 3550 is built for commercial openings. On residential-grade doors, Kwikset's 200BRNL RDT Breton passage lever and 300BRNL RDT Breton privacy lever are Grade 3 levers for 1-3/8 inch to 1-3/4 inch doors, and the 200DL Delta passage lever ships with a reversible adjustable 6AL latch and RCS strike, with a 200DL-RCALFD version carrying a round corner adjustable 20 minute UL latch and round corner strike. Note these are passage and privacy functions, so unlike the keyed 3550 they do not take a key.
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Does the Hager 3550 WTN US26D come with a warranty?
Absolutely. The Hager 3550 WTN US26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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