Product Dimensions: 14 1/4" W x 14 1/4" L x 24" H. Supports up to 60 of chimney. Use with 8" DuraTech chimney pipes. Supports the pipe that runs through the ceilings of chimneys. Can be used on cathedral and flat ceilings. A venting pipe with an inner diameter of 8" is required for this unit. Do you need to get DuraTech chimney piping through a wall or a ceiling? The mission has been completed! With ease, this 24" Cathedral Ceiling Support Box accomplishes the task. This venting device can hold up to 60 pounds of chimney and is suitable for both flat and cathedral ceilings. This support box has been tested and listed for use with a 2100 degree Fahrenheit HT chimney system and is ideal for wood stoves, fireplaces, furnaces, boilers, ranges, water heaters, and other appliances powered by wood, coal, or gas. This box comes with a limited lifetime warranty and is designed to work with 8" DuraTech chimney pipes.

Product Dimensions: 14 1/4" W x 14 1/4" L x 24" 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