(Formerly Stanley) FBB179 – 4.0″ x 4.0″ Ball Bearing Hinge Yale 2100 Series Rim Exit Devices latchbolt retracted by key outside

latchbolt retracted by key outside or knob/lever inside

With this new alternative finish available

Replacement cover for 4050A Series closers

In addition to listing as UL panic and fire exit hardware device

(Formerly Stanley) FBB179 – 4.0″ x 4.0″ Ball Bearing Hinge Yale 2100 Series Rim Exit Devices latchbolt retracted by key outsideBest FBB179 Five Knuckle Ball Bearing Architectural Hinge, Steel, Full Mortise, Standard Weight, 4" x 4", Square Corner Stanley Hinges have been re branded as Best Hinges. Packaging may change but its still the same quality hinge you have relied on for decades from Stanley. Depending on stock levels and availability these hinges may be shipped with the Stanley or Best packaging. BEST FBB Series hinges are ball bearing hinges that conform to ANSI A156.