Authorized Replacement from National Hardware Stock #N184-572
Patented ratchet adjustment eliminates need for adjustment locking pin
Conforms to ANSI/BHMA standard A156.17
Meets NFPA8 standard for 3 hour fire rated doors - minimum 2 spring hinges per door required
Automatically closes door - an alternative to overhead mounted door closers
Standard weight spring hinge automatically closes the door; ideal for use in corridors, entrances and stairways
Anti-friction bearings take vertical and lateral loads; patented ratchet design for quick fine-tuning of tension
Can be installed right- or left-handed on doors measuring up to 4-by-8 feet and weighing up to 180 pounds
Comes complete with a wrench, adjusting pins, and directions
Measures 4 by 4 inches; square corners; bright satin brass finish

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 4.5 inch
Height : 0.5 inch
Length : 6.4 inch

Item Weight: 12.16 ounce (View shipping rates and policies)
Shipping Weight: 12.8 ounce (View shipping rates and policies)

ASIN : B00004Z11P

Product Description

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).