BB1279 EWT – Standard Weight - (4-1/2" x 4-1/2")
- Five Knuckle, Ball Bearing Hinge
- ANSI A8112
- Two ball bearings
- For use on medium weight doors or doors requiring medium frequency service
- ETW (Electric Through-Wire Only)
BB1168 EWT – Heavy Weight - (4-1/2" x 4-1/2")
- Five Knuckle, Ball Bearing Hinge
- ANSI A8111
- Four ball bearings
- For use on heavy weight doors or doors requiring high frequency service
- ETW (Electric Through-Wire Only)
