51 Series Industrial Door Closers 51 Series Door Closer 51 Series Door Closer Yale® 51 Series Closers are designed to fit almost any application and are the choice of engineers worldwide. They are ideal for use with aluminum store front doors and frames, yet they also complement wood or metal door installations. Non-handed, the 51 series is available as multi-sized units and offers tri-packed packaging on standard non-hold open and hold open closers. Features Exceeds 12 million cycles Non-handed Tri-packed (regular arm, top jamb and parallel arm installations) Rack and pinion design Cast aluminum body 1-3/8" diameter piston 5/8" diameter pinion journals Standard, separate and independent latch, sweep and backcheck intensity valves 2-7/8" projection All standard arm applications allow doors to swing 180 degrees, conditions permitting Warranty: 30 years limited Staked valves Downloads Catalog Installation Instructions Templates Close Want to learn more? Complete the form below to get the conversation started. loading 1100 Series Industrial Door Closers 5800 Series Cast Iron Door Closers 2700 Series Architectural Door Closers