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Polished brass mortise lockset with screwless knob and face plate, right hand

Marks USA

Marks USA New Yorker 9NY10DW/3 Polished Brass Right Hand Mortise Lockset

SKU CH-3H58-YT7EV

Right-hand mortise lockset with screwless thru-bolted knobs, solid brass plates and cylinder, latch-only function, two keys included

  • FinishPolished Brass
  • TypeMortise Lockset
  • KeyingKeyed Different
  • Vestibule security with always-locked exterior
  • Screwless knobs thru-bolted for tamper resistance
  • Solid brass construction resists corrosion
  • Right-hand orientation fits specific doors
  • Two keys included for immediate use

Marks New Yorker Mortise Lockset

The Marks New Yorker 9NY10DW/3 is a polished brass mortise lockset designed for right-hand doors in commercial vestibule or storeroom applications. It operates with a latch-only mechanism and no deadbolt, keeping the outside locked at all times while allowing free egress from the inside. A solid brass cylinder and two keys are included for keyed-different access.

Screwless Thru-Bolted Knobs

Screwless knobs mount through the door with thru-bolts for a clean appearance and secure attachment that resists loosening under heavy use. Solid brass face plates and trim provide corrosion resistance and durability in high-traffic entrances. The 1-1/16 by 7-5/8 inch face plate fits standard mortise preparations without additional machining.

Commercial Storeroom and Vestibule Doors

This lockset suits building managers and contractors fitting right-hand doors that must remain locked from the outside at all times. It is not intended for residential entry sets needing a thumb turn, privacy function or deadbolt. Left-hand doors or openings requiring a passage or classroom function will need a different configuration.

Highlights

  • Vestibule security with always-locked exterior
  • Screwless knobs thru-bolted for tamper resistance
  • Solid brass construction resists corrosion
  • Right-hand orientation fits specific doors
  • Two keys included for immediate use

Specifications

FinishPolished Brass
TypeMortise Lockset
KeyingKeyed Different

Questions about this item

Does the solid brass cylinder need periodic lubrication or replacement?

The solid brass cylinder is built for long service; lubricate with dry graphite if the key feels stiff, otherwise no scheduled replacement is required.

What limits continuous operation of the latch-only mechanism on a busy door?

The latch-only design has no deadbolt, so the spring-loaded latch is the sole barrier; heavy traffic will wear the latch spring before any other part.

How much heat or noise does the lock generate during all-day use?

Mechanical mortise locksets produce no heat and only the faint click of the latch engaging; there is no motor or electronics to create noise or warmth.

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