Norton 8501 Series Closer Full Cover
Adjustable spring sizes 1-6. Tri-style® packaging standard (regular arm, top jamb and parallel arm mounting). Exceeds 15 million cycles (witnessed and verified by UL). Non-handed. Staked valves. Standard, separate and independent, latch, sweep and backcheck intensity valves. Cast aluminum body. Rack and pinion design. 1-1/4″ (32mm) piameter piston. 5/8″ (16mm) diameter pinion journals. 2-1/8″ (54mm) projection (standard covers). All standard arm applications (with slim, full or metal covers) allow doors to swing 180°, conditions permitting.