The Narow Door Loop (NDL18) is a low cost method of transferring low voltage power from the door frame to the locking device. Door loops are commonly used with electric mortise & cylindrical locks, electric exit trims and latch pullback devices. Surface Mounted Field sizable 18" cable. Durable powder coated finish. Pre-drilled hole sin the base. Flexible armored conduit.
AL - Aluminum
D - Duronatic