Designed for use on standard internal residential doors, including medium to heavy 30 & 60 minute fire doors weighing up to 40kg. Smooth ball bearing action and tested to 200,000 cycles make these hinges ideal for doors with heavy domestic traffic. BS EN Classification 27211207 CE Standard Web BS EN 1935:2002 Certifire Number CF714 Corner Type Square Corrosion Rating 2 - Occasionally damp/wet, rural and sheltered areas Description Designed for use on standard internal residential doors, including medium to heavy 30 & 60 minute fire doors weighing up to 40kg. Smooth ball bearing action and tested to 200,000 cycles make these hinges ideal for doors with heavy domestic traffic. Finish Polished Chrome Fire Rating 30 & 60 Minutes Grade 7 Hole Dia. mm 6.2 Knuckle Dia. mm 11.0 Knuckle Type Ball Bearing Length inch 3 Length mm 76 Material Carbon Steel Max Door Weight kg 40 No. of CSK Screws 12 Open Width mm 51 Pack Dimensions L x W x H mm 120 x 40 x 25 Pack Weight kg 0.24 Product Code 334159 Rec Screw Dia. mm 4.5 Rec Screw Gauge imp. 9 Screw Size imp. 9 x 1 Screw Size mm 4.0 x 25 Screws Required Per Pair 12 Size L x W mm 76 x 51 Thickness mm 2.2