Marks USA 9NY10A/26D Satin Chrome Right Hand Mortise Door Lock

Marks New Yorker Mortise Lockset

The Marks New Yorker 9NY10A/26D is a heavy-duty Grade 2 mortise entry lockset finished in satin chrome. It is designed for institutional, industrial, commercial, or residential doors requiring a right-hand configuration. The lockset features solid brass construction with screwless, thru-bolted knobs for a clean appearance and secure mounting. Two keys are supplied with the solid brass cylinder.

Check door handing and backset before ordering

This unit is specifically a right-hand mortise lockset with a 2-1/2 inch backset. Verify that your door preparation matches this handing and backset measurement exactly. The front face plate dimensions are 1-1/16 by 7-5/8 inches and must suit your existing mortise pocket. Ensure the door thickness is compatible with the thru-bolted mounting method used for the screwless knobs.

Solid brass components resist wear under heavy use

The deadbolt provides a full one-inch throw constructed from cast alloy, while the latch offers a reversible half-inch throw made of solid brass. These materials are chosen for durability in high-traffic environments. The thru-bolted knob design distributes stress through the door rather than relying on surface screws, maintaining alignment during sustained operation. The satin chrome finish on solid plates protects the underlying brass from corrosion.