Manufacturer LCN Model 5014-3071-LH-AL Application Interior/exterior mounted in 4″x4″ frame Size ANSI Size 4 Mounting Overhead Concealed Hand Left Hand – LH Door Thickness Maximum 1-3/4 (44 mm) U.L. Listed UL listed with regular arms for self-closing doors. ANSI/BHMA Tested and certified under ANSI Standard A156.4. Warranty 10 Years Weight 11.0000