Four-Bolt Mortise Door Lock with Matching Keeper Set

The four projecting cylindrical bolts form the defining layout of this mortise multipoint door lock. They are arranged in a straight row through the brushed faceplate, separate from the spring-loaded latch positioned near the upper end. The lock case also presents a square spindle follower and a euro-profile cylinder opening, giving buyers clear reference points for coordinating the handle, cylinder and internal operating geometry. A separate strike plate and recessed keeper box are shown for evaluating the door-frame side of the installation.

Correct selection depends on more than the visible bolt count. Buyers should verify the backset, handle-to-cylinder center distance, faceplate dimensions, lock-case depth, bolt spacing and projection, latch orientation, handing, and keeper alignment. The available cavity inside the door stile and the frame preparation for the strike components should be reviewed before samples are approved.

For an OEM or ODM enquiry, send a dimensioned drawing or physical reference sample, door and frame sections, required opening direction, finish reference, quantity forecast, and packaging details. CHIER can then review the lock-body layout and keeper arrangement against the intended door assembly without assuming direct replacement compatibility.