Marks USA 9NY10A/26D Satin Chrome Left Hand Mortise Door Lock
Heavy-duty mortise lockset with screwless thru-bolted knobs and satin chrome finish for commercial or residential entry doors
- Security gradeHeavy Duty
- Location typeInstitutional/Industrial/Commercial/Residential
- Backset distance2-1/2 in
- Grade2
- Lock keyingKeyed Different
- Main functionEntrance
- Satin chrome finish resists wear on solid brass plates
- Left-hand mortise design fits specific door swing direction
- Screwless thru-bolted knobs prevent loosening under heavy use
- Grade 2 heavy-duty rating suits institutional and commercial doors
- Solid brass cylinder includes two keys for immediate entry control
Mortise entry lock for commercial doors
This Grade 2 mortise lockset is built for institutional, industrial, commercial and residential entrances. It features a solid brass cylinder with satin chrome finish and screwless knobs that are thru-bolted for strength. The lock operates with a key outside and a thumb turn inside. Two keys are supplied.
Left-hand doors needing heavy-duty security
Suits specifiers who require a heavy-duty mortise lock on a left-hand door with a 2-1/2 inch backset. The screwless knob design resists tampering in high-traffic areas. Not for right-hand doors without re-handing, nor for buyers needing a cylindrical lock or electronic access control. Keyed-different cylinders cannot be matched to an existing master-key system.
Satin Chrome finish with 2-1/2 inch backset
The satin chrome finish on solid brass matches modern commercial hardware aesthetics. A 2-1/2 inch backset fits standard mortise door preparations. The deadbolt throws a full inch and the latch throws one-half inch. Verify the handing and backset before ordering.
How it compares
Measured against everything we stock in Door Lock Sets & Deadbolts, at today’s prices. Recalculated every night.
- Price $215.99
- Pricier than about 84% of the 2,145 comparable items (median $55.99).
Specifications
| Product | |
|---|---|
| Brand name | Marks |
| Product line | New Yorker |
| Model name | 9NY10A/26D |
| Product type | Mortise Lockset |
| Design style | Knobs |
| Size & build | |
| Surface finish | Satin Chrome |
| Main material | Brass |
| Backset distance | 2-1/2 in |
| More details | |
| Security grade | Heavy Duty |
| Location type | Institutional/Industrial/Commercial/Residential |
| Grade | 2 |
| Lock keying | Keyed Different |
| Main function | Entrance |
Questions about this item
How do I confirm the deadbolt and latch are operating correctly after installing this mortise lockset?
Turn the key outside and thumb-turn inside to extend the deadbolt fully; the 1" throw should seat solidly in the strike. Then operate the lever to retract the 1/2" latch and verify smooth, spring-assisted return.
What components are included in the box and what must be purchased separately for this 9NY10A/26D lockset?
The box contains the mortise lock body, satin-chrome front plate (1-1/16" x 7-5/8"), screwless thru-bolted knob trim on both sides, solid brass cylinder with two keys, and mounting hardware. No additional parts are required for standard installation.
Which handing should I select for a door that swings inward with hinges on the left?
Choose the left-hand version (9NY10A/26D) — it is factory-configured for doors hinged on the left when viewed from the outside, matching your swing direction.
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