Premium Deadbolt Single Cylinder Entry Round Rose Aged Bronze Grade 3 (SC1 KW1) SalesEvent ChryslerFobiks 9 V Backup Power Socket 9 V Backup Power Socket Operating Temperature 4°F to 151°F ( 20°C to 66°C) Operating Humidity 0 100% non condensing Compliant with FCC Part 15 Function Entry Backset 2 3 8" and 2 3 4" (60mm or 70mm) Door Thickness Fits 1 3 8" to 1 3 4" (35mm ~ 45mm) door thickness Door Hole Diameter 1 1 2" and 2 1 8" (38mm and 54mm) Concealed Screws No Material Metal Rosette Shape Round Theme Contemporary Finish Aged Bronze Warranty and Product Information Limited Lifetime Mechanical Warranty BHMA Certification Grade 3 Product Class Residential This design will make you feel secure and in style