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Polished brass ornamental mortise lockset with screwless knobs, left-hand reverse, double cylinder

MAXTECH

MAXTECH LHR Polished Brass Left Hand Reverse Double Cylinder Mortise Lockset 2-1/2" Backset

SKU CH-4J7T-PZYNQ

Polished brass ornamental mortise lockset with double cylinders, left-hand reverse handing, screwless knobs and self-adjusting spindles for iron gates

  • Backset distance2-1/2 in
  • Lock keyingKeyed Different
  • Main functionOrnamental Entry Double Cylinder Mortise Lockset
  • Surface finishPolished Brass
  • Sold asEach
  • Product typeOrnamental Double Cylinder Mortise Lockset
  • Polished brass finish resists corrosion on iron gates
  • Left-hand reverse handing fits specific door swings
  • 2-1/2" backset matches existing mortise cutouts
  • Screwless knobs with self-adjusting spindles simplify installation
  • Double cylinder with two keys secures both sides

Product Identity

The Maxtech LHR Polished Brass Double Cylinder Mortise Lockset is a left-hand reverse ornamental lock for iron gates and entry doors. It suits builders and property owners who need a traditional knob-style lock with a 2-1/2" backset and a 1" x 7-1/8" faceplate.

Replacement Fit

This set replaces the Marks 22AC/3-W-LHR mortise lock when the handing, backset and faceplate dimensions match exactly. The jump is worth it only if the existing door prep aligns with the 1" deadbolt throw and the screwless knob design is preferred over visible fasteners.

Installation Notes

Thru-bolted mounting and self-adjusting spindles simplify fitting, but the left-hand reverse handing must be confirmed before ordering. Common issues arise when the knob/lock vertical orientation, hinge side or door swing direction do not match the three-question handing check.

How it compares

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

Price $87.99
Pricier than about 62% of the 2,145 comparable items (median $55.99).

Specifications

Product
Product lineLike Marks 22AC/3-W LHR
Product typeOrnamental Double Cylinder Mortise Lockset
Design styleKnobs
Size & build
Surface finishPolished Brass
Main materialBrass
Backset distance2-1/2 in
More details
Lock keyingKeyed Different
Main functionOrnamental Entry Double Cylinder Mortise Lockset

Questions about this item

What door thickness does the 2-1/2" backset and 1" x 7-1/8" faceplate require?

The 2-1/2" backset measures from the door edge to the cylinder centre. The 1" x 7-1/8" faceplate mortises into the door edge; standard 1-3/4" thick doors suit this hardware.

How do the screwless knobs and self-adjusting spindles install, and what step is often missed?

Insert each spindle through the mortise hub, press the knob on until it clicks, then tighten the hidden set screw. The missed step is aligning the spindle flats before pressing the knob.

When will the double cylinders need re-keying or replacement?

Re-key if a key is lost or access must change. Replace cylinders if the 1" deadbolt throws stiffly or the keyway wears after years of daily use.

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