Nascom's 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.FEATURESSNAP FIT ON STEEL - NO GLUE REQUIREDENCAPSULATED HERMETICALLY SEALED CONTACTS12" 22AWG WIRE LEADSPOLYPROPYLENE HOUSINGSWIDE GAP - N35 NdFeB RARE EARTH MAGNETLISTED TO UL634 STANDARD