638-168

This 6-inch x 18-inch B-Vent length is a premium double-wall pipe designed for the safe and efficient venting of Category I gas-fired appliances. Engineered for durability, this 18-inch section is a critical component for residential and commercial HVAC systems, specifically for exhausting flue gases from natural gas or liquid propane water heaters, boilers, and furnaces. The double-wall construction features an aluminum inner liner for maximum corrosion resistance and a galvanized steel outer shell to maintain structural integrity and reduce heat clearance requirements. Its precision-engineered design ensures a secure, leak-resistant connection, making it an ideal choice for contractors and homeowners looking for reliable chimney pipe components.
Type: Metal Venting
Size: 6" x 18"
Dimensions: 18 inches × 6 inches (diameter) × 6 inches (diameter)
Application: Used for venting gas-fired appliances such as residential furnaces, water heaters, and boilers. Suitable for Category I appliances requiring Type B gas vent systems.
Specifications: Double-wall construction, aluminum inner liner, galvanized steel outer casing, twist-lock connection system, UL listed for Type B gas vent applications.