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Marks USA

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

SKU CH-Q6NV-R8A4S MPN 9NY10A/26D

Heavy-duty mortise entry lockset with screwless thru-bolted knobs, 2-1/2" backset and solid brass cylinder, supplied with two keys

  • FinishSatin Chrome
  • Selling UnitBox
  • TypeMortise Lockset
  • FeaturesScrewless Knobs Thru-Bolted
  • Security LevelHeavy Duty
  • Location TypeInstitutional/Industrial/Commercial/Residential
  • Heavy-duty Grade 2 security for institutional and commercial doors
  • Screwless thru-bolted knobs resist tampering and simplify installation
  • Full 1-inch deadbolt throw with solid brass half-inch latch
  • Solid brass cylinder in satin chrome finish includes two keys
  • Right-hand mortise configuration fits standard 2-1/2 inch backset

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.

Highlights

  • Heavy-duty Grade 2 security for institutional and commercial doors
  • Screwless thru-bolted knobs resist tampering and simplify installation
  • Full 1-inch deadbolt throw with solid brass half-inch latch
  • Solid brass cylinder in satin chrome finish includes two keys
  • Right-hand mortise configuration fits standard 2-1/2 inch backset

Specifications

BrandMarks
Model9NY10A/26D
FinishSatin Chrome
Selling UnitBox
TypeMortise Lockset
FeaturesScrewless Knobs Thru-Bolted
Security LevelHeavy Duty
Location TypeInstitutional/Industrial/Commercial/Residential
MaterialBrass
Backset2-1/2"
Grade2
KeyingKeyed Different
StyleKnobs
SeriesNew Yorker
FunctionEntrance

Questions about this item

Does the box contain both keys and the thumb turn, or must the thumb turn be purchased separately?

The lockset ships with a solid brass cylinder in satin chrome finish and two keys; the thumb turn is already fitted on the inside plate so nothing else is required.

The specs list Grade 2 and Heavy Duty — which version should I choose for a commercial entrance?

This single model is Grade 2 and rated Heavy Duty, making it the correct choice for institutional, industrial, commercial or residential entrance doors.

What does the 2-1/2" backset mean when the lock is fitted to my door?

It means the centre of the cylinder hole sits two and a half inches from the door edge, so you must prepare the mortise pocket at that distance for the lock to align correctly.

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