Corbin Russwin 437F41 Grade 1 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$45.05
$40.07
Corbin Russwin 437F41 ML2000 Trim Alignment (Adapter) Pack, 1-3/4" Door

Corbin Russwin 437F41 Grade 1 ML2000 Trim Alignment (Adapter) Pack, 1-3/4" Door

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Model: 437F41

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

$45.05
$40.07
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Corbin Russwin 437F41 ML2000 Series Trim Alignment Adapter Pack for 1-3/4" Doors

Commercial-Grade Mortise Lock Trim Alignment Solution

The Corbin Russwin 437F41 Trim Alignment Adapter Pack is a precision-engineered accessory designed specifically for use with the ML2000 Mortise Lock Series. This adapter pack ensures proper trim alignment on 1-3/4" doors, providing a reliable and professional fit for commercial mortise lock installations. Designed to integrate seamlessly with the ML2000 Series, this component delivers the exacting tolerances required for high-performance commercial door hardware applications.

Professional Features & Benefits

  • ANSI/BHMA Grade 1 mortise lock per A156.13 Series 1000, Operational and Security Grade 1
  • UL Cycle above and beyond: 14.5 Million Cycles (Verification ID: V875753)
  • Patented Quick Reversible latchbolt — reverse handing without disassembling the lock case
  • Multi-function capability: 12 functions configurable from one ML2054 lockbody
  • Heavy-gauge steel lockcase 5-7/8" x 4" x 15/16"; 1" stainless steel deadbolt, 1" throw
  • 3/4" (19mm) throw anti-friction two-piece latchbolt requires less force to close
  • Wide variety of trim designs including Muséo®, Vineyard™, Behavioral Health (BHSS/BLSS)
  • Status indicator options for locked/unlocked visibility (sectional and escutcheon trim)
  • Motorized Electric Latch Retraction (MELR) available for ML20900 series
  • Thru-bolted trim designs for proper alignment and increased security
  • Can be used with new or existing Corbin Russwin key systems; accepts most other manufacturers' cylinders
  • UL/cUL listed, UL10C positive pressure; 3-hour fire door up to 4' x 10' single or 8' x 10' pair
  • Ten-year mechanical warranty; five-year MELR; two-year electrical

Technical Specifications

  • Grade: ANSI/BHMA A156.13 Series 1000, Operational and Security Grade 1
  • Handing: Handed; quick reversible — re-handed without disassembling the lock case
  • Door Thickness: 1-3/4" (44mm) standard; optional thicknesses available
  • Backset: 2-3/4" (70mm)
  • Lockcase: Heavy-gauge steel, 5-7/8" (149mm) x 4" (102mm) x 15/16" (24mm)
  • Armored Front: Wrought brass, bronze, or stainless steel, 8" x 1-1/4"
  • Latchbolt: 2-piece mechanical with anti-friction insert, 5/8" x 1" x 3/4" (19mm) throw
  • Auxiliary Latchbolt: 9/16" (14mm) effective throw; deadlocking
  • Deadbolt: One-piece stainless steel, 19/32" x 1-1/4" x 1" (25mm) throw
  • Strike: Wrought brass, bronze, or stainless steel, ANSI straight lip, 4-7/8" x 1-1/4" x 1-1/8" lip to center
  • Cylinder: Brass, 6-pin L4 keyway, 0-bitted standard
  • Spacing: C. to c. knob/lever to cylinder: 3-5/8" (92mm); knob/lever to thumbturn: 2-7/16" (62mm)
  • Certifications: ANSI/BHMA A156.13 Grade 1; UL/cUL UL10C 3-hour positive pressure; ADA A117.1; California State Fire Marshal; Windstorm/Hurricane certified
  • Warranty: Ten-year mechanical; five-year MELR; two-year electrical

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 Corbin Russwin Quality?

Corbin Russwin door hardware accessories are engineered to meet the precise requirements of commercial-grade mortise lock installations. The 437F41 Trim Alignment Adapter Pack is purpose-built for the ML2000 Mortise Lock Series, ensuring proper trim alignment on 1-3/4" doors with the consistency and reliability that commercial applications demand. Trust Corbin Russwin components to deliver the fit, function, and durability required for professional door hardware installations.

Product Specs

Product Group:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Lock Parts and Accessories
Commercial/Residential:
Commercial
Subcategory:
Parts and Accessories
Product Function:
Adapter
For Use With:
ML2000
Department:
Door Hardware

Corbin Russwin 437F41 – Frequently Asked Questions

1) What does the Corbin Russwin 437F41 adapter pack actually do?
The 437F41 is a trim alignment adapter pack, not a lock. It is an accessory for the Corbin Russwin ML2000 mortise lock series that aligns the trim (lever or knob rose/escutcheon) correctly against the door face so the thru-bolted trim seats square and the spindle runs true through the lock case. You still need the ML2000 lockbody, trim, cylinder and strike to complete an opening.
2) Will the 437F41 trim adapter pack work on a 2-inch thick door?
No. The 437F41 pack is sized for 1-3/4 inch doors only, and it ships in that single thickness. ML2000 mortise locks are built for 1-3/4 inch (44mm) as standard with optional thicknesses available, so a thicker door needs the adapter pack matched to that thickness instead of this one.
3) Does this adapter fit Corbin Russwin ML2000 locks only, or other mortise locks too?
It is made for the Corbin Russwin ML2000 mortise lock series. The pack is cut for that lock case and trim geometry, so treat it as an ML2000 part rather than a universal mortise trim shim.
4) I manage a building with ML2000 mortise locks. Is the 437F41 something I keep on the shelf for trim service calls?
It is a sensible MRO stock item if your openings are ML2000 on 1-3/4 inch doors. Loose or cocked lever trim on a mortise lock is usually an alignment problem, and this pack is the factory part that corrects it without pulling and replacing the trim set. One pack covers one 1-3/4 inch door.
5) Does adding this adapter change the backset or spindle spacing on an ML2000 lock?
No. The ML2000 keeps its 2-3/4 inch (70mm) backset, with 3-5/8 inch center to center from knob/lever to cylinder and 2-7/16 inch from knob/lever to thumbturn. The adapter aligns the trim to those fixed centers; it does not shift the door prep.
6) Can I use this adapter on a fire-rated opening with an ML2000 mortise lock?
The ML2000 series is UL/cUL listed to UL10C positive pressure and carries a 3-hour fire door rating up to 4 ft x 10 ft single or 8 ft x 10 ft pair, so the alignment pack is used within that same listed ML2000 assembly on 1-3/4 inch doors. Install it as part of the lock and trim set rather than as a field-fabricated shim.
7) Does handing matter when ordering the 437F41 trim pack?
Handing is not an option on this pack, and the ML2000 lock itself uses a patented quick reversible latchbolt that re-hands without opening the lock case. What you do have to match is door thickness, and this pack is the 1-3/4 inch version.
8) Will the trim on my ML2000 still thru-bolt with this adapter in place?
Yes. ML2000 trim is thru-bolted for alignment and added security, and the 437F41 pack works with that method on a 1-3/4 inch door. It is there to hold the trim square while the thru-bolts are drawn up.
How fast can I get the Corbin Russwin 437F41 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 437F41 come with a warranty?
Absolutely. The Corbin Russwin 437F41 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 437F41?
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 437F41 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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