DuraVent DuraTech All-Fuel Chimney Pipe Wall Thimble - For 7" Inner Diameter DuraTech: A vent pipe with a 7" inner diameter is required for this unit. Please note that a Finishing Collar must be ordered separately for installation. When you use this precisely constructed chimney pipe wall thimble to make a safe hole for your 7" diameter chimney pipe to fit through, walls are no match for DuraTech piping. Its galvanized steel construction will keep any combustible wall between 4" and 10" thick from coming into touch with heat and debris passing via the chimney system of a wood stove, fireplace, furnace, boiler, range, water heater, or other equipment that burns wood, coal, or gas. This item has been UL tested to 103 HT and is covered by the manufacturer's limited lifetime warranty (UL re-examination service number MH 7399).

Passes DuraTech chimney pipe through a wall* Fits walls 4" to 10" thick Galvanized steel construction Sleek black finish For use with 7" chimney pipes Limited lifetime warranty