Hinge Door Stl Sprng 4in Brs

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 best 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 hour 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' x 8'; weighing up to 180 lbs. 3-1/2" x 3-1/2" hinges for 1-3/8" thick doors, 4" x 4" for 1-3/4" thick up to 3' x 7' and weighing up to 50, 85, or 110 pounds; 4-1/2" x 4" or 4-1/2" x 4-1/2" for doors up to 1-3/4" thick, 3' x 7'6" or 4' x 8' weighing up to 80, 130, or 180 pounds (see package for details).

• RESIDENTIAL DOOR HINGES
• Satin Brass
• Size In=4 x 4
• SPRING - STANDARD WEIGHT - STEEL
• FULL MORTISE - SQUARE CORNER