BURNING STOVE TEE PIPE ROUND 6 inch Wood Duct 24 Gauge HVAC Chimney Steel Vent. Designed to fit round piping to extend a duct system, this Master Flow 6 in. Black Stove Pipe Tee features a 24-gauge single-wall construction that imbues your system with the durability of steel. The tee’s 90-degree arm makes it easy […]