638-151

This 5-inch diameter by 6-inch length B-vent pipe is a critical component for safe gas appliance exhaust systems. Designed with a double-wall construction, it provides an insulated air space that protects surrounding combustible materials from heat while maintaining high flue temperatures for optimal draft. Ideal for venting natural gas or liquid propane furnaces, boilers, and water heaters, this durable metal venting section ensures a secure, leak-free connection in residential and commercial HVAC systems. Whether you are performing a new installation or replacing a corroded vent segment, this Type B gas vent length offers reliable performance and code-compliant exhaust management for category I atmospheric appliances.
Type: Metal Venting
Size: 5" Diameter x 6" Length
Dimensions: 6 inches × 5 inches (Inner Diameter) × 5 inches (Inner Diameter)
Application: Used for venting natural gas or liquid propane (LP) category I appliances, including furnaces, water heaters, and boilers.
Specifications: Double-wall construction with an aluminum inner liner and galvanized steel outer casing for corrosion resistance and thermal protection.