Gordon Cellar Door 8 in. x 0 in. Primed Steel RD3 Cellar Door Extension Header

The Gordon Cellar Door 6 in. Extension for RD-3 Doors can be used to extend the RD-3 cellar door to cover longer openings. This extension piece is made of steel and primed red. The 6 in. extension will extend the overall length of the unit to 78 in. - 80 in.