Bilco Classic Series Primed Steel Basement Door Extension Size C

The Bilco Classic Series Primed Steel Basement Door Extender is designed to increase the door length of Bilco Classic Series basement doors. This basement door extender is for size C only. For longer lengths, these door extenders can be installed back-to-back. The Bilco door extensions are fitted with left and right panels and covers so that the flanges overlap the side panels and top flange of the Bilco door.