The From the Anvil 4\" Shepherd\'s Crook Universal Door Bolt Black are for use with windows or doors. The fixing plate measures at 90mm x 37mm, the receiver plate is 33mm x 20mm, the receiver bridge is 36mm x 17mm and the angled keep is 36mm x 25mm (10mm deep). It is sold individually complete with fixing screws. Black Door Bolt The bolt has a black finish - this is baked in a high-temperature oven to give it good durability and can be used internally or externally. To remove dirt deposits, simply wipe over with a lightly oiled cloth from time-to-time and this will restore it to its original c...