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Polished brass mortise lockset with right-hand lever and face plate

Marks USA

Marks USA New Yorker 9NY10D/3 Polished Brass Right Hand Mortise Lockset

SKU CH-KPES-Y80G5

A right-hand mortise lockset with classroom function, latch and rocker operation, solid brass plates and screwless through-bolted knobs in polished brass

  • Lock keyingKeyed Different
  • Surface finishPolished Brass
  • Product typeMortise Lockset
  • Polished brass finish resists corrosion and matches traditional hardware
  • Mortise lockset construction fits standard door preparations for reliable security
  • Classroom function allows outside key access while inside lever remains free for quick exit
  • Screwless knob design with thru-bolted assembly provides clean appearance and firm mounting
  • Solid brass cylinder includes two keys for immediate keyed-different operation

Right-Hand Mortise Lockset for Commercial Doors

The Marks New Yorker 9NY10D/3 is a polished brass mortise lockset designed for right-hand doors in office, vestibule or classroom settings. It operates with a latch and rocker mechanism that omits a deadbolt, so the door latches automatically without a separate bolt throw.

Classroom Function with Latch-and-Rocker Operation

The lockset provides a classroom function where the outside lever is locked or unlocked by key while the inside lever always allows free egress. Because there is no deadbolt, the unit suits passages that must remain unlocked or storerooms that stay locked, but it cannot secure an opening that requires a projected bolt.

Through-Bolted Screwless Knob Assembly

Knobs attach through the door with concealed through-bolts and a self-adjusting spindle, eliminating exposed screws on the trim. This mounting method fits standard mortise preparations and resists tampering, but it requires a door thick enough to accept the through-bolt hardware.

How it compares

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

Price $228.99
Pricier than about 85% of the 2,145 comparable items (median $55.99).

Specifications

Product
Product typeMortise Lockset
Size & build
Surface finishPolished Brass
More details
Lock keyingKeyed Different

Questions about this item

Will the 2-1/2" backset and 1-1/16" x 7-5/8" face plate match the mortise pocket in my existing door?

The lockset uses a standard 2-1/2" backset and a face plate measuring 1-1/16" x 7-5/8", which fits most commercial mortise prep; verify your door's pocket depth before installing.

How can I confirm the classroom function is operating correctly once fitted?

With the key, the outside knob should unlock for entry and relock automatically when closed; the inside knob always retracts the latch for free egress, and no bolt is present.

Does the package include the solid brass cylinder, two keys and the through-bolted screwless trim, or must I source anything else?

The box contains the mortise case, solid brass cylinder with two keys, screwless knob assemblies with self-adjusting spindle, and through-bolted rose plates; no extra parts are required for a standard installation.

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