1600BC: Sized spring #5 Non handed Rack and pinion design Cast aluminum body 2-7/8' (73mm) projection 1-3/8' (35mm) diameter piston 5/8' (16mm) diameter pinion journals Standard, separate and independent, latch, sweep and backcheck intensity valves Tri-Style® packaging (regular arm, top jamb and parallel arm mounting) All standard arm applications allow doors to swing 180°, conditions permitting Staked valves