Manufacturer Locknetics by Schlage Model 351+ Housing Dimensions Height: 2-1/8″ Length: 12-1/2″ Width: 1-11/16″ Door Type Single Door Voltage Auto Sensing 12 to 24 VDC Holding Force 500 lbs. (227 kg) Mounting Type Surface Certifications ANSI/BHMA A156.23 Grade 2 U.L. Listed UL listed as an auxiliary lock for a 3 hour fire rated opening CA State Fire Marshal CA State Fire Marshal Approved NYC MEA City of New York MEA Approved Warranty MagForce Lifetime Warranty Weight 12.0000