Designed for use on heavy duty fire doors in public buildings. Lubricated ball bearing washers provide a lifetime of smooth door operation making them ideal for use with door closers as they reduce closing friction. Fixings included. Fit with intumescent hinge pads (not included, sold separately product code 487385) when fitting fire doors to adhere to fire regulations. Smooth ball bearing action Suitable for 30 & 60 minute fire doors weighing up to 120kg For doors with heavy traffic: tested to 200,000 cycles CE Approved: BS EN 1935" Size L x W mm: 101 x 76 Knuckle Dia. mm: N/A Hole Dia. mm: N/A Thickness mm: 3.0 Knuckle Type: Ball Bearing Corner Type : N/A Material: Stainless Steel Finish: Satin Stainless SteelSize 101 x 76 x 3 - 2 Pieces Timco Grade 13 Fire Door Hinges - Satin Stainless Steel in Silver