Cast iron butt hinges are ideal for low use domestic door and are commonly fitted on period properties to match in with existing cast iron door ironmongery. Corner Type Square Corrosion Rating 1 - Clean, dry & low humidity environments Description Cast iron butt hinges are ideal for low use domestic door and are commonly fitted on period properties to match in with existing cast iron door ironmongery. Finish Self Colour Hole Dia. mm 4.80 Knuckle Dia. mm 12.0 Knuckle Type Plain Length inch 3 Length mm 75 Material Iron Max Door Weight kg 20 Open Width mm 50 Pack Dimensions L x W x H mm 170 x 92 x 10 Pack Weight kg 0.300 Pattern 200 Product Code 434176 Rec Screw Dia. mm 4.0 Rec Screw Gauge imp. 8 Screws Required Per Pair 12 Size L x W mm 75 x 50 Thickness mm 3.5