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UL Listed for “A” Label 3 Hour Fire-Rated Doors
Maximum drop is 1/2"
top jamb and parallel arm installations
1000lb with top header mount and bottom base mount
Fire ratings apply to metal doors only
BB5-HW NRP - 4.5" x 4.5" Heavy Weight NRP Ball Bearing Hinge (Non-Removable Pin) Finish:Stainless Steel, Marine Grade UL Listed for “A” LabelDesign Hardware BB5 HW Series 4 1 2 x 4 1 2 Full Mortise Five Knuckle Commercial Hinges, Heavyweight, Non Removable Pin The embodiment of small but mighty Ball bearing reduces friction to extend lifetime of hinge For use on heavy weight doors or doors with high frequency use More durable than standard hinges Swaging: 1 16 Swage standard which provides 1 16 of clearance between leaves Security NRP: NRP Non removable pin standard on all BB5 HW hinges
