BILCO C EXTENSION 12 BASEMENT 32622"
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<p>The Bilco Classic Series Primed Steel Basement Door Extension are used to increase the door length for the Bilco Classic Series Basement Door - Size C only. The door extensions can be mounted back to back for longer areaway lengths. Bilco's Door Extensions are installed with a right and left panel, as well as a cover panel that helps the flanges overlap the side panels and the header flange of the Bilco door.</p>