Mortise Cylinders are used in a variety of locking hardware, including full-case mortise locks, narrow stile locks, and exit devices. LSDA mortise cylinders are milled from solid brass and manufactured to exact OEM specifications. Cylinders are available in 1″, 1-1/8″, 1-1/4″ sizes and several popular keyways. Mortise T-Turns Cylinders replace the keyway with a thumbturn for keyless operation. Dummy Mortise Cylinders are used to fill the hole when no key access us desired. Mortise Cylinder applications include Offices Stores, Public Buildings, and Campuses.