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Polished brass mortise entry lockset with wide face plate and screw-on knobs

Marks USA

Marks USA 91A/3-X Brass Left Hand Mortise Entry Door Lock

SKU CH-C2BX-JP796 MPN 91A/3-X

Surface-mounted mortise entry lockset with 1-1/4" x 8" wide face plate, screw-on knobs and swivel spindle for left-hand doors

  • Backset distance2-1/2 in
  • Lock keyingKeyed Different
  • Main functionEntrance
  • Surface finishPolished Brass
  • Sold asBox
  • Product typeMortise Entry Surface Mounted Lockset with 1-1/4 in x 8 in W
  • Polished brass finish resists corrosion and matches traditional décor
  • 1-1/4" x 8" wide face plate covers large door prep cleanly
  • Left-hand mortise design fits doors hinged on the left side
  • Screw-on knobs with swivel spindle simplify installation and operation
  • Solid brass cylinder includes two keys for immediate secure entry

Product Identity

This Marks Metro 91A/3-X is a polished brass mortise entry lockset designed for left-hand doors. It serves commercial and residential entrances where a surface-mounted wide face plate is required.

Installation Checklist

Verify the door is prepared for a 2-1/2 inch backset and a 1-1/4 by 8 inch face plate cut-out. Confirm the handing is left-hand and that the cylinder and thumb-turn orientation match the swing direction.

Build and Daily Use

Solid brass plates and screw-on knobs with a swivel spindle provide durable surface-mounted operation. The lock includes a solid brass cylinder with two keys for keyed-different security.

How it compares

Measured against everything we stock in Door Lock Sets & Deadbolts, at today’s prices. Recalculated every night.

Price $117.99
Pricier than about 70% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameMarks
Product lineMetro
Model name91A/3-X
Product typeMortise Entry Surface Mounted Lockset with 1-1/4 in x 8 in Wide Face Plate
Design styleKnobs
Size & build
Surface finishPolished Brass
Main materialBrass
Backset distance2-1/2 in
More details
Lock keyingKeyed Different
Main functionEntrance

Questions about this item

Does the lockset include the mortise body and strike plate, or must they be purchased separately?

The set includes the mortise lock body, solid brass cylinder with two keys, screw-on knobs with swivel spindle, and the 1-1/4" x 8" wide face plate; no additional mortise components are required.

Is this model available in right-hand or other backset sizes?

This 91A/3-X is supplied only as a left-hand mortise with a 2-1/2" backset; other handings or backsets are not offered under this model number.

How does the 2-1/2" backset affect installation on a standard door?

The 2-1/2" backset positions the knob and cylinder centre 2-1/2" from the door edge, matching common commercial door prep for this Metro series entrance lock.

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