638-123

This 4-inch x 45-degree B-Vent adjustable elbow is a critical component for routing exhaust in residential and commercial gas-fired appliance venting systems. Engineered for durability and safety, this double-wall metal vent pipe allows for seamless directional changes, helping you navigate around structural obstructions like floor joists or wall studs. The adjustable segments rotate to provide precise angles up to 45 degrees, ensuring a secure and efficient connection for your HVAC system. Ideal for gas water heaters, furnaces, and boilers, this B-vent elbow features a corrosion-resistant inner wall and a galvanized steel outer casing to maintain optimal drafting and prevent heat transfer to surrounding combustible materials.
Type: Metal Venting
Size: 4-inch Diameter
Application: Standard venting for Category I gas-fired appliances, including residential gas furnaces, water heaters, and boilers.
Specifications: Type B Gas Vent, double-wall construction, adjustable from 0 to 45 degrees, corrosion-resistant aluminum inner liner, and galvanized steel outer pipe.