Master Flow 4 in. x 24 in. 28-Gauge Round Duct Pipe

Heavy Gauge 4 in. Pipe is used to vent boilers, furnaces and hot water heaters. Available in a variety of common lengths, diameters and gauges to help make your next HVAC project a success. A simple snap lock design and sturdy galvanized steel construction combine for a quick and secure installation that you can rely on.|Easy-to-install snap lock design|Crimped end with a stop-bead for a secure interlocking fit|Sturdy 28-Gauge, galvanized steel construction|Always seal seams with building code approved sealant or duct tape|Always insulate ductwork for greater system efficiency and comfort