Product details:

Made of durable die-cast metal - Surface Mounted - Chrome Finish Lowest Current Draw Available. Only 20mA at 24V Dual Voltage Inputs - 24V and 120V Self-adjusting swivel catch-plate reduces installation time and adjusts to door alignment changes This product meets UL, FM, CSFM, and BSA requirements The DH Electromagnetic Fire Door Holder is constructed from the finest materials and workmanship available. Each door holder is made of durable die-cast metal and offered in a powdercoated finish. Installation is easy with DH Series installation technique - an adhesive template assures alignment without secondary adjustments. No brackets are required for recessed, flush or surface mounting (the surface mounting box has three conduit ready entries). Plus, the new catch plate features two pivot points and two way adjustability to further ensure perfect alignment. Optional extension rods are also available for providing the proper gap distance between the door and wall. The basic units offer superior reliability with built-in transient protection and low residual magnetism so they release easily even on new ADA low pressure door closers.