Features:
- Full Mortise
- Five Knuckle
- Ball Bearing
- Standard Weight Hinge
- Steel with steel pin (ANSI A8112)
- Non-rising removable pin with button tip
- Two ball bearings
- 5″ x 5″ and 4.5″ x 4.5″ BB1279 available with two different leaf sizes
- 3.5″ x 3.5″ BB1279 available with reversible hole pattern
- For use on medium weight doors or doors requiring medium frequency service





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