Stormproof hinges are designed to fit into the rebate of a stormproof casement frame and allow the casement to pivot away from the frame. Ideal for casement windows / doors Allows casement to pivot away from the frame" Size L x W mm: 63 x 58 Knuckle Dia. mm: 10.0 Hole Dia. mm: 6.00 Thickness mm: 1.8 Knuckle Type: Plain Corner Type : N/A Material: Steel Finish: Epoxy White Timco Stormproof Hinge (1951) - White (Size 63 x 58 - 2 Pieces)