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

Marks USA

Marks USA 71A/3 Polished Brass Right Hand Mortise Entry Door Lock 2-3/4" Backset 1-1/4" x 8" Faceplate

SKU CH-W72R-B2KT2 MPN 71A/3

Right-hand mortise entry lockset with scissor and anti-friction latches, solid brass cylinder, two keys, and a 1-1/4" x 8" faceplate

  • Security gradeHeavy Duty
  • Location typeCommercial/Institutional/Industrial/Residential
  • Backset distance2-3/4 in
  • Lock keyingKeyed Different
  • Main functionEntrance
  • Surface finishPolished Brass
  • Heavy-duty security for commercial and residential doors
  • Polished brass finish resists corrosion and adds traditional style
  • Right-hand configuration fits standard door orientations
  • Scissor and anti-friction latches provide smooth, reliable operation
  • Surface-mounted screw-on knobs with swivel spindle simplify installation

Right-hand mortise entry lockset

The Marks Metro 71A/3 is a surface-mounted mortise entry lockset finished in polished brass. It is designed for commercial, institutional, industrial and residential doors that require a heavy-duty entrance function with a scissor latch and anti-friction latch.

2-3/4" backset determines fit

This lockset operates on a 2-3/4 inch backset, the single measurement that decides whether it matches your door preparation. The wide faceplate measures 1-1/4 by 8 inches and the deadbolt throws one inch, so the cut-out must match these dimensions exactly.

Surface mounting frees interior space

Screw-on knobs with a swivel spindle attach directly to the door face without through-bolting, simplifying installation on solid wood or metal doors. A solid brass cylinder with two keys operates from the outside while a thumb turn controls the deadbolt from inside, leaving the full door thickness available for other hardware.

How it compares

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

Price $118.99
Pricier than about 70% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameMarks
Product lineMetro
Model name71A/3
Product typeMortise Entry Lockset - Surface Mounted Screw-on Knobs with 1-1/4 in x 8 in Wide Face Plate
Design styleKnobs
Size & build
Surface finishPolished Brass
Main materialBrass
Backset distance2-3/4 in
More details
Security gradeHeavy Duty
Location typeCommercial/Institutional/Industrial/Residential
Lock keyingKeyed Different
Main functionEntrance

Questions about this item

How does the 2-3/4" backset determine where the lock sits on the door?

The backset is the distance from the door edge to the centre of the knob hole, so a 2-3/4" backset positions the lock body that far in from the edge.

What does the mortise interface require from the door preparation?

A mortise pocket must be cut into the door edge to house the lock body, and the 1-1/4" x 8" faceplate then sits flush against the door surface.

What door thickness and handing does this right-hand lock accommodate?

The lock is built for right-hand doors and the surface-mounted screw-on knobs with swivel spindle fit standard door thicknesses without through-bolting.

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