Norton 8501689 ADA Compliant Adjustable Spring Sizes 1-6 Door Closer

Adjustable through the power range of sizes 1 through 6; as outlined in ANSI/ BHMA specification A156.4 option PT 4H. Closers will also comply with the opening force requirements as outlined in the Americans with Disabilities Act (ADA) and ANSI/BHMA standard A117.1 for interior doors. Closer bodies are constructed of a special aluminum alloy, carefully selected to accommodate interactive steel components and operating conditions. Rack & Pinion Operation Provides a smooth constant control of the door through its full opening and closing cycle. 180° door swing can be achieved when door, frame, hardware and arm function do not interfere. Door closers is non-handed and can be installed on either right- or left-hand swing doors. Pinion shaft extends vertically through the closer body in both directions.