Arrow DC325DBZ Dark Bronze (690) Size 2-5 Adjustable Surface Applied Door Closer, specially designed for retail or office This door closer is UL/cUL listed , its also UL10C listed for positive pressure to comply with UBC-72 (1997), it meats the requirements of ANSI A156.4, and it ADA approved. For regular arm and top jamb, size 2-5, fits interior door width 30" to 54" inches wide. For Parallel Arm, size 2-5, fits interior door width 24" to 48" inches wide. This door closer features a cast aluminum body, a hardened steel rack and pinion, high tensil steel springs, staked valves, two non critical adjusting valves (sweep and latch) control closing speed, and a backcheck intensity valve.