DuraVent DuraTech 7"-8" Diameter 7DT-TCR Round Trim Collar for Round Support Box manual-1-heat-setting-white BTU’s (British Thermal Units) are

BTU’s (British Thermal Units) are a standard of measurement which represent the heat value of any type of energy used to create heat

3" Insulated Flexible Pipe (4-foot length)

19" D Framing Dimensions 91" H x 89

A safe and durable choice for a fireplace

Constructed with a stainless steel inner wall

DuraVent DuraTech 7"-8" Diameter 7DT-TCR Round Trim Collar for Round Support Box manual-1-heat-setting-white BTU’s (British Thermal Units) areConceals 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