638-145

This 5-inch diameter B-Vent adjustable pipe section is a critical component for safe and efficient HVAC exhaust systems. Designed specifically for Category I natural gas and liquid propane (LP) appliances, this double-wall metal venting solution is ideal for furnaces, boilers, and residential water heaters. The adjustable telescoping design allows for a custom fit between standard pipe lengths, eliminating the need for cutting and simplifying installation in tight spaces. Its double-wall construction features a corrosion-resistant aluminum inner liner and a durable galvanized steel outer shell, ensuring optimal heat retention and structural integrity while protecting surrounding combustible materials from high temperatures.
Type: Metal Venting
Size: 5-inch Diameter
Dimensions: 12 inches (Adjustable range) × 5 inches (Inner Diameter)
Application: Used to vent Category I gas-fired appliances such as furnaces, boilers, and water heaters. Suitable for residential and light commercial HVAC exhaust systems.
Specifications: Double-wall construction; Aluminum inner liner; Galvanized steel outer shell; Telescoping adjustment capability; UL listed for gas appliance venting.