Seco-Larm DH-151SQ Surface-Mount Magnetic Door Holder; Holding Force 33-lb (15kg); for use with Door Closers to Control The Release and Closing of Residential, Commercial, and Public Area Doors

Seco-Larm DH-151SQ Magnetic Door Holder, Surface-Mount, Adjustable Armature Plate, 33-lb Holding Force, Cast Aluminum Faceplate, Built-in Voltage Spike Suppressor, Low Profile Design

Seco-Larm DH-171SQ Flush-Mount Magnetic Door Holder; Holding Force 33-lb (15kg); for Use with Door Closers to Control The Release and Closing of Residential, Commercial and Public Area Doors

Seco-Larm DH-100E-40SQ Door Holder 4" Extension Bar Only, Armature Plate Sold Separately; for The DH-171SQ Flush-Mount Magnetic Door Holder and DH-151SQ Surface-Mount Magnetic Door Holder