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
