N.O. wide-gap contact for N.C. circuits Wide 2" gap, yet contact is no longer than conventional surface mount contacts For loose-fitting doors and windows, steel doors and other applications where wide gaps are found Screw terminal for quick installation Available in white Seco-Larm SM-217Q/W Miniature Surface-Mount N.C. Magnetic Contact with concealed screw terminals. 2" Gap. White. Sold in multiples of 10 (price is for 1 pc).