Bilco Classic Series Sloped Wall Primed Steel Basement Door Extension

Bilco Sloped Wall Door Extensions are a flat stock extension that is used to increase the door length for the Bilco Sloped Wall Door. The door extensions can be mounted back to back for extended areaway lengths. They use a flashing strip supplied with the door, as well as an extension panel to make sure everything is secure in its place. Bilco manufactures them to be 6in., 12in., and 18in. widths for the corresponding sloped wall door.