Square Ceiling Support box 36: with attic insulation shield (Replaced 6DT-CS36IS).

The Duravent Square Ceiling Support Box with Support Collar provides a high quality support for your Duratech Chimney system and an integrated flue extension for tight installations. This support box is suitable for flat, vaulted and cathedral (A-Frame) ceiling applications, as well as short attic spaces. With various sizes to choose from and an additional insulation collar that enables the support box to be qualified as an attic insulation shield. With the strength to support up to 60 feet of DuraTech Chimney, the integrated flue extension accepts single or double-wall stovepipe that will connect directly to the ceiling support without the need of a separate chimney adaptor.