DuraVent DuraTech All-Fuel Chimney Storm Collar - For 12" Inner Diameter DuraTech: A venting pipe with an inner diameter of 12" is required for this unit. Dura-All-Fuel Tech's Chimney Storm Collar fits chimney pipes with an inner diameter of 12". During rainy weather, the storm collar adds extra protection between your ventilation pipe and flashing, creating an airtight waterproof seal that delivers the finest moisture defense available. This storm collar is composed of sturdy aluminum and is c-IL-us certified. UL 103 and ULC S604 listed (MH7399). In Canada, a stainless steel exterior wall is necessary for installation.

Creates weather-resistant seal between vent piping and flashing Durable aluminum construction For use with 12" DuraTech chimney pipes Limited lifetime warranty