Best (Formerly Stanley) BB855C-5 x 6-USP Full Mortise Heavy Weight Concealed Bearing Prison Hinge 5" x 6" Not Swaged, With No Holes, Door Weighing Up To 800 Lbs, Based On a 36" x 84" Door, Using [3] Hinges, See Manuf Cut Sheet, USP Prime Coat Gray

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The Best BB855C-USP 5" x 6" Concealed Ball Bearing Detention Prison Hinge, formerly known as Stanley, is a heavy-duty solution designed for full mortise applications. With a maximum door weight of 800 lbs, based on a 36" x 84" door and using [3] hinges, this hinge is furnished without holes and not swaged. Refer to the manufacturer's cut sheet for more information, but know that it comes with a prime coat of gray for that professional touch.

• For lead-lined doors to x-ray rooms and other exceptionally heavy doors
• Made of double-weight steel capable of carrying doors weighing up to 800 lbs. (363 Kg) (Based on a 3' x 7' door with 3 hinges)
• concealed hardened steel races contains sixteen 1/8" (3.2mm) hardened and ground steel balls which are assembled within a jacket
• Concealed bearings are well lubricated ensuring smooth, long-lasting operation
• Rolled knuckles are welded and machined
• Typically made not swaged, no holes (application A) for full surface applications, or for full mortise (applications C) applications. All other configurations are made to order