Product Dimensions: 14.25" W x 14.25" L x 11" H. Supports up to 60 feet of chimney. Use with 8" DuraTech chimney pipes. Chimney pipework is supported through the ceilings. It can be used on both cathedral and flat ceilings. A venting pipe with an inner diameter of 8" is required for this unit. This ceiling support box can be used on either flat or cathedral ceilings to offer support and stability to the chimney. It's made for the 8" DuraTech chimney pipe system, which is a double-walled all-fuel chimney pipe. It's finished in a sleek black and has a trim collar that covers the entrance. It can sustain a chimney up to 60 feet tall. The dimensions of this ceiling support box are 14.25" W x 14.25" L x 11" H.

Product Dimensions: 14.25" W x 14.25" L x 11" H Supports up to 60 of chimney For use with 8" DuraTech chimney pipes Supports chimney piping through ceilings Can be used on flat and cathedral-style ceilings