Nascom's N205A is a wide gap standard size floor mount for commercial and industrial overhead door applications with an L shape magnet.The N205A combines the installers' choice of contact configuration for maximum gap performance with an L shape magnet.The closed loop versions of the N205A prevent false alarms caused by the side to side shifting of overhead doors with our unique NO DEAD SPOT technology.FeaturesNo Dead Spot TechnologyWide Gap - Alnico 5 Magnet24" Armored Cable Lead Protection36" 22awg Wire LeadsIndustry Standard Switch Mounting HolesExtruded Anodized (type Ii) AluminumListed To Ul634 Standard