The Dynalock 2011-US28-OFA is a full size 1200 lb. holding force electromagnet. It is designed for life safety and high security on rated or nonrated doors and frames. Specify for commercial, industrial, or institutional openings when low cost and high security are required. The unit features a satin aluminum finish.The 2011-US28-OFA lock is designed for ease of installation with adjustable mounting, field selectable voltage, and convenient wiring compartments. Optional integrated door and lock status sensors allow remote monitoring without the need to install separate "door contacts".The 2011-US28-OFA is designed for a single outswinging door. The coil and housing assembly mounts rigidly to the door frame while the armature mounts to the door in a manner that allows it to pivot slightly to compensate for door irregularities. When the door is closed and the lock is energized the armature is magnetically bonded to the lock face, thus securing the door without utilizing any moving parts.The unit is equipped with an offset armature designed for aluminum storefront doors. The armature's mounting hole is hole is higher to avoid top rail drilling problems.