DuraVent DuraTech 24" Tall Reduced Clearance Ceiling Support Box with Attic Insulation Shield - For 6" Inner Diameter DuraTech: A vent pipe with a 6" inner diameter is required for this unit.

Size: 6 Inch 2" clearance to combustibles No locking bands or mechanical fasteners required 24" reduced square ceiling support box for pipes with 6" diameter Inner wall is 25% thicker than competitive chimneys for an extra margin of safety Designed for normal continuous operation at 1000 degree Fahrenheit flue gas temperatures For use with wood stoves fireplaces furnaces boilers ranges water heaters or other appliances fueled by wood oil coal or gas