Accentra 455LN Monroe Heavy Du...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$371.09
$144.97
Yale Commercial Yale 455LN Monroe Heavy Duty Grade 1 Single Dummy Trim Cylindrical Lever Lock YAL-MO-455LN

Accentra 455LN Monroe Heavy Duty Grade 1 Single Dummy Cylindrical Lever Lock

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Model: MO-455LN-625
From the 5400 Series Collection
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$371.09
$144.97
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Accentra 455LN Monroe Heavy Duty Grade 1 Single Dummy Cylindrical Lever Lock

Professional Grade 1 Cylindrical Lever Lock Solution

The Accentra 455LN Monroe lever lock delivers heavy-duty Grade 1 performance for demanding commercial and industrial applications. This single dummy cylindrical lever lock features adjustable door thickness from 1-3/4" to 2-1/4", 2-3/4" standard backset, and 1/2" stainless steel latchbolt throw. ANSI/BHMA A156.2 Series 4000 Grade 1 certified with UL/cUL fire rating up to 3 hours for reliable access control in high-traffic environments.

Professional Features & Benefits

  • ANSI/BHMA: A156.2, Series 4000 Grade 1
  • UL/cUL: UL/cUL fire-rated up to 3 hours
  • Windstorm: Certified (refer to local codes)
  • Mechanism: Heavy-gauge steel, zinc-plated, dichromated
  • Backset: 2-3/4" standard; 3-3/4" or 5" extension link available to order
  • Latchbolt: 1/2" stainless steel throw standard; 3/4" throw available to order
  • Guardbolt: Deadlocks latchbolt when door is closed; standard on all locking functions
  • Door Thickness: Adjustable from 1-3/4" to 2-1/4"
  • Fronts: 2-1/4" x 1-1/8" beveled standard; flat fronts available to order
  • Lead Shielding: Available to order
  • Cylinders: Brass, 6-pin, keyed-random cylinder with two keys furnished standard, 7-pin available to order. For other cylinder and keying options, see page 31.
  • Reversibility: Non-handed
  • Strikes: 1-1/4" curved lip for 1-3/4" door standard; other lip lengths available to order; all reversible
  • Finishes: Available in 13 finishes, including PVD lifetime finish options for 613. PVD is standard for 605 and 606
  • Warranty: 7-year mechanical

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and/or frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  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 Accentra Quality?

Accentra cylindrical lever locks deliver professional-grade reliability with heavy-gauge steel construction and Grade 1 certification for demanding commercial applications. UL/cUL fire-rated up to 3 hours with 7-year mechanical warranty for added confidence. Engineered for demanding commercial applications where dependable performance is essential.

Product Specs

Series:
5400 Series
Subcategory:
Lever Locksets
Keyed Function:
Non-Keyed
Grade:
Grade 1
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Leversets
Keyed:
No
Commercial/Residential:
Commercial
Lock Type:
Cylindrical
Handle Type:
Lever
Lock Function:
Dummy
Product Attribute:
Cylindrical Locks
Product Model:
YAL-455LN
Collection:
5400 Series
Product Function:
Dummy
Lever Design Name:
Monroe Lever
Product Category:
Mechanical Locks
Department:
Door Hardware

Accentra MO-455LN-625 – Frequently Asked Questions

1) What does a single dummy lever like the Accentra 455LN Monroe actually do, and is there a latch in it?
A single dummy is pull trim only. The Monroe lever on the 455LN is fixed, it does not rotate a spindle, there is no latchbolt and no cylinder, so nothing retracts and the door has to be held shut by a ball catch, roller catch, magnetic catch or a closer. It is what you put on the inactive leaf of a pair, on a closet or cabinet door, or on the pull side of a door where the other side carries the working lock. Single dummy means one side only, so if you want matching levers on both faces you need two.
2) Will the Accentra 455LN dummy lever fit a 2 inch thick door?
Yes. The 455LN Monroe adjusts for door thickness from 1-3/4 inches up to 2-1/4 inches, so a 2 inch leaf is inside the range. Standard 1-3/4 inch commercial doors are the low end of that band. It will not suit a 1-3/8 inch door, which is the common older interior thickness, so on thin residential-weight doors look at another series.
3) Can I use this dummy lever on a labeled fire door?
The 5400LN series carries a UL/cUL fire rating up to 3 hours, and it is also listed as windstorm certified subject to local code. Note that a dummy has no latching hardware, so on a labeled opening the positive latching has to come from whatever is actually securing the leaf, typically flush bolts or an edge device on an inactive leaf. The dummy is trim on that assembly, not the latching component.
4) I need a Grade 1 dummy lever that matches the working locks on the rest of my building. Does this match?
The 455LN is part of the Accentra 5400LN cylindrical lever family, certified to ANSI/BHMA A156.2 Series 4000 Grade 1. Because it shares the Monroe lever design and rose with the keyed and non-keyed functions in the same series, a dummy on a closet or inactive leaf reads identically to the entry, classroom or storeroom locks on the adjacent doors. Specify the same finish code across the group and the openings look like one set.
5) I need the door to actually latch - what should I order instead of the 455LN Monroe?
The 455LN Monroe is a dummy, meaning the lever is fixed trim with no latching mechanism. For a latching non-keyed opening, the Falcon K101 is a Grade 1 heavy duty passage cylindrical lock with non-handed levers, fire rated, with a 1-3/8 inch to 2-1/4 inch door thickness range; the Falcon T101 and the Corbin Russwin CL3110 are also Grade 1 passage lever locks, the CL3110 covering 1-3/4 inch to 2 inch doors. Any of those give you a retracting latch the dummy does not have.
6) My door is 2-1/4 inches thick - which levers cover that?
The Accentra 455LN Monroe adjusts from 1-3/4 inch to 2-1/4 inch door thickness. Among comparable levers, the Falcon K101 Grade 1 passage lock also reaches 2-1/4 inch, with a range of 1-3/8 inch to 2-1/4 inch. Several others stop short: the Corbin Russwin CL3110 and the Design Hardware X75 are built for thinner doors, the CL3110 at 1-3/4 inch to 2 inch and the X75 at 1-3/4 inch.
7) If the opening needs to be keyed, what replaces the 455LN Monroe?
The 455LN Monroe is non-keyed dummy trim with no cylinder or locking function, so it cannot secure an opening. For keyed commercial functions, the Dexter C1000 Series offers Grade 1 classroom and classroom security cylindrical lever locks, and Grade 1 asylum function covering 1-3/8 inch to 2 inch doors. Hager's 2580 with the Withnell lever is a Grade 2 storeroom lock for 1-3/8 inch to 2 inch doors, and Cal-Royal AG05 is a Grade 2 storeroom lever with a deadlocking latchbolt.
8) Do I have to order the 455LN dummy lever left or right handed?
No handing to specify. The 5400LN series is non-handed and reversible, and a dummy trim has no latch or guardbolt to flip, so the same part works on either face and either swing. That is one less thing to get wrong when you are ordering trim for a run of openings.
9) What finishes does the Monroe 455LN dummy lever come in?
Nine finish choices are orderable: 605 bright brass, 606 satin brass, 612 satin bronze, 613E dark oxidized satin bronze equivalent, 619 satin nickel, 625 bright chrome, 626 satin chrome, plus BSP black suede powder coat and WSP white suede powder coat. 605 and 606 are supplied as PVD, which holds up better outdoors and in coastal or high-touch areas than a plated brass. The two powder coat options are the ones to pick when the spec calls for black or white rather than a metallic.
10) What is the difference between this Accentra dummy lever and the BEST 9K single dummy trim?
Both are Grade 1 heavy duty single dummy cylindrical lever trim, so functionally they land in the same place: fixed pull trim, no latch, no cylinder. The BEST 9K Series 1DT is the equivalent from the BEST line and is the one to pick if the rest of the building is already 9K, since the lever and rose profiles will match. Choose the Accentra 455LN Monroe if the openings around it are Accentra 5400LN. If Grade 1 is not required, the BEST 7KC Series 1DT is the medium duty Grade 2 single dummy trim.
11) Is the 455LN dummy a full cylindrical lock body or just trim on a rose?
It is trim. The 455LN mounts as dummy trim rather than a chassis through a 2-1/8 inch bored lock prep with a latch case in the edge, which matters for door prep: you are not boring for a latch or a strike. Confirm the prep the dummy trim requires against the 5400LN installation instructions before drilling, especially if you are converting an opening that previously had a working lock in it.
12) Is there a lighter-duty dummy lever if Grade 1 is more than the opening needs?
Yes. The BEST 7KC Series 1DT is a Grade 2, medium duty non-keyed single dummy trim cylindrical lever lock, and the Callan Bentley BN5051 is a Grade 2 dummy lever. The Accentra 455LN Monroe is Grade 1 cylindrical dummy trim, so the difference is the ANSI/BHMA grade and duty rating rather than the function - all three are non-latching pull trim.
13) Are the Baldwin 5103 half dummy levers a substitute for the Accentra 455LN Monroe?
They fill the same role on the door but they are not a like-for-like swap. The Baldwin Estate 5103 half dummy comes handed - a left hand version and a right hand version with the 5048 rose - so you must specify the hand. The Accentra 455LN Monroe is a non-handed cylindrical dummy leverset carrying Grade 1, so it installs without a handing decision. Choose the Baldwin where the Estate lever and rose style is the match, the 455LN where the commercial grade and non-handed prep matter.
14) For a double door where both leaves need matching trim, is a dummy pair better than the 455LN Monroe?
The Accentra 455LN Monroe is a single dummy, so it provides trim on one face only - for two faces you order two. If you want a factory pair in one part number, Emtek offers dummy pairs in the Arts and Crafts lever, Hammered lever, and Classic brass Cortina lever. The trade is that the 455LN Monroe is a Grade 1 cylindrical dummy built on commercial prep, while the Emtek pairs are decorative leversets.
15) What is the difference between the Accentra 455LN Monroe dummy and a passage lever like the Design Hardware X75?
Both are non-keyed, but the X75 is a Grade 1 passage lever lockset with a flat lever for 1-3/4 inch doors, meaning the lever rotates and retracts a latch. The Accentra 455LN Monroe is a Grade 1 cylindrical dummy with the Monroe lever - fixed trim used as a pull, with no latch to hold the door closed. If the door relies on a latch or a ball catch is not acceptable, the passage lever is the one to specify.
16) Is the Accentra 455LN heavy duty enough for a school or hospital corridor?
Grade 1 to ANSI/BHMA A156.2 Series 4000 is the top commercial rating and is what specs call for in schools, healthcare, government and high-traffic retail. The series mechanism is heavy gauge steel, zinc plated and dichromated. On a dummy the wear point is the lever and rose mounting rather than a chassis, so the Grade 1 build mostly buys you a lever that stays tight under abuse and a finish that keeps up with the working locks beside it.
17) Is a knob lock an acceptable substitute where the 455LN Monroe is specified for ADA lever trim?
No. The Accentra 455LN Monroe is a lever-handle cylindrical dummy; knob products such as the Arrow MK02-TA privacy lock with Tudor knob, the Arrow HK11 entrance ball knob, and the Arrow MK33 asylum ball knob use a knob rather than a lever. Where a lever handle is required by the specification, substitute another lever product rather than a knob set.
How fast can I get the Accentra MO-455LN-625 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 Accentra MO-455LN-625 come with a warranty?
Absolutely. The Accentra MO-455LN-625 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 Accentra MO-455LN-625?
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 Accentra MO-455LN-625 from ZenSupply?
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