Nascom's N205AU is a wide gap standard size floor mount for commercial and industrial overhead door applications with a universal magnet.The N205AU combines the installers' choice of contact configuration for maximum gap performance.The closed loop versions of the N205AU prevent false alarms caused by the side to side shifting of overhead doors with our unique NO DEAD SPOT technology.FEATURESNO DEAD SPOT? TECHNOLOGYEXTRA WIDE GAP - N35 NdFeB RARE EARTH MAGNET24" ARMORED CABLE LEAD PROTECTIONINDUSTRY STANDARD SWITCH MOUNTING HOLESUNIVERSAL MOUNT36" 22AWG WIRE LEADSEXTRUDED ANODIZED (TYPE II) ALUMINUMLISTED TO UL634 STANDARD