The D900 Series Grade 1 heavy-duty mortise deadbolts provide a reasonably priced mortise locking solutions for doors like restrooms, locker rooms, and store room doors. The D900 can be used as a primary locking device or as an accessory to another latching device. These locksets are built with a heavy-duty chassis for all applications where ANSI A156.36 Grade 1 products are required.
