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Polished brass mortise lockset with left-hand lever and escutcheon plate

Marks USA

Marks USA 9NY92DW/3 Polished Brass Left Hand Mortise Lock Latch Only 2-1/2" door lock

SKU CH-2N1Z-W9G5T

A left-hand mortise latch set in polished brass with thru-bolted screwless lever plates and two keys

  • FinishPolished Brass
  • TypeMortise Lockset
  • KeyingKeyed Different
  • ADA-compliant lever design ensures accessible operation
  • Vestibule storeroom function keeps exterior locked at all times
  • Solid polished brass plates and cylinder resist corrosion
  • Thru-bolted screwless escutcheons simplify installation and maintenance
  • Independent spring-loaded spindles deliver smooth lever return

Marks USA 9NY92DW/3 Polished Brass Mortise Lockset

This Marks USA 9NY92DW/3 is a left-hand mortise lockset with a polished brass finish. It features a latch-only design without a bolt or rocker mechanism. The lockset includes a solid polished brass cylinder supplied with two keys. It is built for commercial vestibule or storeroom applications where the outside lever is always locked.

Latch-only mortise lock for always-locked exterior

This unit replaces a mortise lock that combines a latch and deadbolt with a simpler latch-only assembly. The jump is worth it when the opening only requires a latch and the exterior must remain locked at all times. The thru-bolted screwless lever plates and independent spring-loaded captivated spindles provide durable operation. ADA-compliant lever and escutcheon plates suit accessible entrances.

Commercial doors needing left-hand latch-only

This lockset suits commercial doors that require a left-hand, keyed-different mortise lock with a fixed exterior lever. It is not for doors that need a deadbolt or rocker for additional security. It is not for right-hand door preparations or for applications that require an interior thumb turn. Buyers needing a combined latch and bolt should look at a different function.

Highlights

  • ADA-compliant lever design ensures accessible operation
  • Vestibule storeroom function keeps exterior locked at all times
  • Solid polished brass plates and cylinder resist corrosion
  • Thru-bolted screwless escutcheons simplify installation and maintenance
  • Independent spring-loaded spindles deliver smooth lever return

Specifications

FinishPolished Brass
TypeMortise Lockset
KeyingKeyed Different

Questions about this item

What door thickness and backset does the 2-1/2" mortise lock require?

The lock is built for a 2-1/2" backset with a 1-1/16" x 7-5/8" front face plate; door thickness must match the mortise pocket depth for the thru-bolted plates.

How do the thru-bolted screwless lever plates install, and what step is often missed?

Insert the independent spring-loaded captivated spindles through the door, align the angled escutcheon assemblies, then drive the thru-bolts — skipping the spindle captivation check causes lever wobble.

Which parts will need replacement after extended commercial use?

The solid polished brass cylinder, the two keys, and the lever support springs are the serviceable items; the latch-only mechanism has no bolt or rocker to wear out.

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