Master Flow 26-Gauge Round Metal Duct Pipe is built for durability and reliable HVAC system performance. Ideal for venting boilers, furnaces, and hot water heaters, this heavy-duty galvanized steel pipe ensures a secure, tight fit with its crimped end and stop-bead design. The snap-lock system simplifies installation, while its corrosion-resistant construction provides longevity. For maximum efficiency, it is recommended to seal seams with building code-approved duct sealant or tape.