Grade 11 flush / interleaf Ball Bearing hinge. Dimensions: 100 x 79 x 3mm. Grade 201 Satin Stainless Steel. Requires no morticing into door or frame. No intumescent needed for use on fire rated doors. Successfully tested in accordance with the requirements of BS EN1935:2002, Grade 11. Successfully fire tested in accordance with the requirements of BS EN 1634-1, suitable for use on 30-minute timber fire doors. UKCA & CE Marked