Automatically closes doors for use as an alternative to overhead mounted door closers in corridors, entrances and stairways. Ratchet adjustment eliminates need for adjustment locking pin and allows for quick fine-tuning tension up or down with Allen hex key. Use with anti-friction hinges for top performance. Pivot point designed to align with CB and FBB Series anti-friction ball-bearing hinges. Conforms to ANSI/BHMA Standard A156.17, meets NFPA80 Standard for 3 hrs fire rated doors (minimum 2 per door required), UK fire approval for use on FD30 and FD60 doors. Carded products packaged with hex wrench. UL listed for doors up to 4 ft x 8 ft, weighing up to 180 lb. 3-1/2 in x 3-1/2 in hinges for 1-3/8 in thick doors, 4 in x 4 in for 1-3/4 in thick up to 3 ft x 7 ft and weighing up to 50, 85 or 110 lb, 4-1/2 in x 4 in or 4-1/2 in x 4-1/2 in for doors up to 1-3/4 in thick, 3 ft x 7 ft 6 in or 4 ft x 8 ft weighing up to 80, 130 or 180 lb (see package for details).

• Closing tension is adjustable
• Tension is adjustable
• Fits standard hinge cutout

• Instruction/Installation Manual https://assets.unilogcorp.com/187/ITEM/DOC/Stanley_Hardware_100014988_Instruction_Installation_Manual.pdf