Marks USA
Marks USA Series 3 Mortise Armored Deadlock Body Brass 2-3/4" Backset Polished Brass US3 Keyed Different #4035
A mortise armored deadlock body with 1" bolt throw and keyed-different cylinder, supplied with strike #4035
- TypeMortise Lockset
- KeyingKeyed Different
- Mortise armored body resists forced entry
- 1" bolt throw secures door deep in frame
- Polished brass US3 finish resists corrosion
- Keyed different #4035 provides unique access
Mortise Armored Deadlock Body
The Marks USA Series 3 mortise armored deadlock body suits commercial and residential doors that require a heavy-duty mortise installation. It is supplied new with a polished brass US3 finish and a 1 inch bolt throw. The lock is keyed different for individual access control.
Stamped Steel Case With Included Strike
A stamped steel case provides structural rigidity for daily operation on high-traffic openings. The front measures 1-1/16 by 4-5/8 inches and fits a standard mortise pocket with a 2-3/4 inch backset. Strike #4035 is included in the box for immediate fitting.
Highlights
- Mortise armored body resists forced entry
- 1" bolt throw secures door deep in frame
- Polished brass US3 finish resists corrosion
- Keyed different #4035 provides unique access
Specifications
| Type | Mortise Lockset |
|---|---|
| Keying | Keyed Different |
Questions about this item
What backset does the Series 3 mortise armored deadlock use?
The lock body is built for a 2-3/4 inch backset, matching standard commercial door preparation.
What front-plate dimensions must the door mortise pocket accommodate?
The front measures 1-1/16 by 4-5/8 inches, so the mortise cut-out needs to match that rectangle.
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Same shelf, same checkout — eight coins and a 30-minute rate lock.



