Product Dimensions: 12" W x 12" L x 11" H. Supports up to 60 of chimney. For use with 6" DuraTech chimney pipes. Supports the pipes for chimneys that run through the ceilings. It's suitable for both flat and slightly slanted ceilings. A vent pipe with a 6" inner diameter is required for this unit. With this DuraTech 11" Square Cathedral Ceiling Support Box, you can easily pass your DuraTech chimney piping through your ceiling. This venting device can support up to 60 pounds of chimney and is suitable for both level and slightly slanted ceilings. This Ceiling Support Box is 12" wide, 12" long, and 11" high, and it's made to fit 6" DuraTech chimney pipes. Its sleek black color and attached trim collar will appeal to you. This ceiling support comes with a limited lifetime warranty.

Product Dimensions: 12" W x 12" L x 11" H Supports up to 60 of chimney For use with 6" DuraTech chimney pipes Supports chimney piping through ceilings Can be used on flat and slightly sloped ceilings