DuraVent DuraTech 7"-8" Diameter 7DT-TCR Round Trim Collar for Round Support Box manual-1-heat-setting-white Constructed with a stainless steel

Constructed with a stainless steel inner wall

Designed for corner installations

3" Insulated Flexible Pipe (4-foot length)

If installing a SmartWall Kit you cannot use a Power Vent or fan

19" D Framing Dimensions 91" H x 89

DuraVent DuraTech 7"-8" Diameter 7DT-TCR Round Trim Collar for Round Support Box manual-1-heat-setting-white Constructed with a stainless steelConceals the gap between the Round Ceiling Support Box and the ceiling cutout. Available in square or round. Painted black. Product Details and Dimensions Size 7 8 Diameter Round Trim Collar for Round Support Box A 11 18 B 21 Applications DuraTech is a double wall, all fuel chimney system for use with wood stoves, fireplaces, furnaces, boilers, ranges, water heaters, or other appliances fueled by wood, oil, coal, or gas, and zero clearance fireplaces