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Satin chrome mortise lockset with ornamental knob rose, left-hand configuration, single cylinder outside, no interior thumb turn

Marks USA

Marks USA 22DW/26D-W-LHR Satin Chrome Left Hand Mortise Lockset

SKU CH-1JG3-EKNM3

A mortise lockset with vestibule storeroom function that stays locked outside and opens freely inside, supplied with a single cylinder and two keys

  • FinishSatin Chrome
  • TypeMortise Lockset
  • KeyingKeyed Different
  • Vestibule storeroom function keeps the outside knob locked at all times
  • Satin chrome finish on solid brass cylinder resists corrosion and wear
  • Left-hand configuration with reversible design suits both door swings
  • 2-1/2" backset and 1" x 7-1/8" faceplate fit standard steel gate doors
  • Single cylinder operation with two keys and no interior thumb turn

Left-hand mortise lockset for vestibule use

This Marks USA mortise lockset is built for vestibule or storeroom doors that must stay locked from the outside at all times. The satin-chrome finish and solid-brass cylinder suit commercial steel gates and security storm doors. A single cylinder on the exterior retracts the latch with a key; no thumb turn is fitted on the interior. The left-hand configuration matches the door swing specified in the order.

Sustained operation stays locked without a deadbolt

Under continuous use the lock maintains its storeroom function: the outside knob remains locked until a key retracts the latchbolt, then relocks automatically when the key is removed. The design omits a deadbolt and rocker, so the latch alone handles every cycle. This keeps the mechanism simple and reliable for high-traffic entrances that require constant exterior security.

Check door thickness and handing before ordering

The lock fits doors between 1-3/8 inches and 1-3/4 inches thick and requires a 2-1/2 inch backset with a 1 by 7-1/8 inch face plate. Verify that the door is prepped for a mortise body and that the left-hand orientation matches the hinge side when viewed from the secure side. The package includes two keys and mounting hardware for installation.

Highlights

  • Vestibule storeroom function keeps the outside knob locked at all times
  • Satin chrome finish on solid brass cylinder resists corrosion and wear
  • Left-hand configuration with reversible design suits both door swings
  • 2-1/2" backset and 1" x 7-1/8" faceplate fit standard steel gate doors
  • Single cylinder operation with two keys and no interior thumb turn

Specifications

FinishSatin Chrome
TypeMortise Lockset
KeyingKeyed Different

Questions about this item

Does the 22DW/26D-W-LHR generate any noise or heat during continuous daily use?

No, this mechanical mortise lockset has no motor or electronics, so it operates silently and produces no heat.

What door preparation and cylinder are required before installing this left-hand storeroom lockset?

You need a door 1-3/8″ to 1-3/4″ thick with a 2-1/2″ backset mortise pocket and a 1″ × 7-1/8″ face-plate cut-out; the lockset includes its own mortise cylinder and two keys.

Can the solid brass satin-chrome cylinder from this lockset be re-keyed to match an existing Marks USA key system?

Yes, the supplied cylinder is a standard Marks USA mortise cylinder and can be re-keyed by a locksmith to work with your current keying.

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