The N1178B-M from Nascom is a recessed 1" press fit steel/door stubby NdFeb neodymium grade N35 nickel plated magnet, brown. The N1178 Series is a 1" recessed wide gap stubby door contact designed for residential, commercial and industrial steel and wood door applications. The N1178 is the installer's choice of contact configuration because the contact set is designed to cut installation times and helps to prevent false alarms caused by shifting or warping doors. The N1178 Series is designed for installation in every type of hinged door including wood doors.