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Satin chrome mortise entry lockset with screwless knobs and thumb turn

Guard Security

Guard Security Metro Mortise Entry Lockset Satin Chrome 26D Left Hand 2-1/2" Backset

SKU CH-R55K-R5KYN

A left-hand mortise entry lockset with self-adjusting spindles, screwless knobs and a solid brass cylinder in satin chrome

  • Location typeCommercial/Residential
  • Backset distance2-1/2 in
  • Lock keyingKeyed Different
  • Main functionEntrance
  • Surface finishSatin Chrome
  • Sold asBox
  • Satin Chrome 26D finish resists wear and corrosion
  • Self-adjusting spindles with screwless knobs simplify installation
  • Through-bolted plate assemblies strengthen the mortise lockset
  • Solid brass cylinder includes two keys for entry
  • Left-hand apartment mortise function suits commercial and residential doors

Mortise entry lockset for apartments

This Guard Security Metro mortise entry lockset fits left-hand doors in commercial and residential apartments. The 2-1/2 inch backset matches standard mortise preparations. A solid brass cylinder with satin chrome 26D finish and two keys is supplied. Through-bolted plate assemblies provide a secure mounting method.

Sustained operation with self-adjusting spindles

Self-adjusting spindles maintain alignment through repeated daily cycles without loosening. Screwless knobs eliminate exposed fasteners that can work free over time. Through-bolted plates distribute torque evenly across the door thickness. The solid brass cylinder resists wear in high-traffic entrances.

Left-hand configuration decides fit

The lockset is handed for left-hand doors only; right-hand installations require a different unit. A 1 inch deadbolt throw and 1-1/16 by 7-5/8 inch faceplate dimensions must match the existing mortise pocket. Keyed-different cylinders prevent master-key access unless rekeyed. Buyers needing right-hand handing or a different backset cannot use this model.

How it compares

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

Price $98.99
Pricier than about 65% of the 2,145 comparable items (median $55.99).

Specifications

Product
Product lineLike Marks Metro 114A/26D
Product typeMortise Entry Thru Bolted Lock Set
Design styleKnobs
Size & build
Surface finishSatin Chrome
Main materialBrass
Backset distance2-1/2 in
More details
Location typeCommercial/Residential
Lock keyingKeyed Different
Main functionEntrance

Questions about this item

Does the 1" deadbolt throw generate heat or noise during continuous daily operation?

No, the mechanical deadbolt and latch operate without motors or electronics, so they produce no heat and only the normal sound of the bolt engaging.

What door preparation is required before installing the 2-1/2" backset mortise lock?

You need a door thick enough for the 1-1/16" x 7-5/8" front faceplate and a mortise pocket cut to accept the lock body and through-bolted plates.

Will the left-hand cylinder and thumb-turn work with an existing right-hand door frame?

No, the lock is handed; a left-hand unit installs only on a left-hand door swing and cannot be reversed on site.

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