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Polished brass left-hand mortise lockset with screwless knobs and wide face plate

MAXTECH

MAXTECH Marks New Yorker 7NY10DW/3 Like Brass Left Hand Storeroom Mortise Lock 2-3/4

SKU CH-FJM4-Q4FA4

Heavy-duty brass mortise lockset with storeroom function, 2-3/4" backset, scissor and anti-friction latch, screwless thru-bolted knobs, left-hand operation

  • Security gradeHeavy Duty
  • Location typeCommercial/Institutional/Industrial/Residential
  • Backset distance2-3/4 in
  • Lock keyingKeyed Different
  • Main functionStoreroom
  • Surface finishPolished Brass
  • Heavy-duty security for commercial and institutional doors
  • Polished brass construction resists wear and corrosion
  • Storeroom function keeps exterior locked at all times
  • Screwless through-bolted knobs simplify installation and durability
  • Scissor and anti-friction latches ensure smooth operation

Storeroom Mortise Lock for Commercial Doors

This heavy-duty mortise lockset is built for storeroom doors that must stay locked from the outside at all times. The vestibule function uses a solid brass cylinder with two keys and has no interior thumb turn. It suits commercial, institutional, industrial and residential installations.

Polished Brass Finish with Thru-Bolted Knobs

The lockset features a 1-1/4" x 8" wide face plate and screwless knob assemblies that are thru-bolted for a rigid mount. A scissor latch and anti-friction latch provide smooth, reliable operation. The left-hand orientation and 2-3/4" backset match standard door preparations.

Replaces Worn Cylindrical Locks on High-Traffic

This mortise chassis replaces lighter cylindrical hardware where heavy use demands stronger construction. The jump is worth it when a door requires an always-locked outside lever, a wide armour front and a through-bolted trim that resists abuse. Buyers needing a deadbolt or an inside thumb turn should choose a different function.

How it compares

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

Price $111.99
Pricier than about 68% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameMAXTECH
Product lineMarks New Yorker 7NY10DW/3 Like
Product typeMortise Lock Knob Vestibule Function Always Locked Storeroom Latch Only Lockset with 1-1/4 in x 8 in Wide Face Plate - Through bolted plate assemblies, Screwles knobs
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 functionStoreroom

Questions about this item

What backset does the 2-3/4" mortise lock require for the door prep?

The lock is built for a 2-3/4" backset, so the door must be bored to that centre-to-edge distance for the latch to align with the strike.

What are the dimensions of the wide face plate that must fit the door edge?

The front plate measures 1-1/4" wide by 8" tall, so the mortise pocket and edge cut-out must accommodate those exact dimensions.

How are the screwless knobs secured during installation?

The knob assemblies are thru-bolted through the door, eliminating exposed screws; the bolts pass through the lock body and tighten from the interior side.

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