ZLINE 61 in. Wooden Chimney Extension for Ceilings up to 12 ft. (KPTT-E)This 1 piece wooden chimney extension will allow for ZLINE Wooden Wall Mount Range Hood mounting for up to 12 ft. ceilings. One 61 in. tall chimney piece will replace the standard 24 in. tall standard chimney. Chimney Extension must be custom cut to fit your specific ceiling height. Returns are not accepted for ZLINE accessories. ZLINE range hood accessories are only compatible with ZLINE range hoods.