DuraTech Square Ceiling Support Box

This DuraTech Cathedral Support Box is designed to provide a positive connection between the support box and DuraTech chimney pipe with a built-in twist-lock feature. This support box is compatible with both flat, and cathedral style ceilings, as well as short attic spaces (see instructions). The Cathedral Support Box is painted black, includes a 2" wide trim collar, and supports up to 60’ of DuraTech chimney pipe.