638-126

This 4-inch B-Vent 90-degree adjustable elbow is an essential component for residential and commercial gas-fired appliance venting systems. Designed for use with natural gas or liquid propane heating equipment, this double-wall vent pipe section allows for maximum flexibility when routing exhaust through tight spaces. The adjustable segments rotate easily, providing the ability to create angles ranging from 0 to 90 degrees to bypass obstructions like floor joists or wall studs. Built with a corrosion-resistant galvanized steel outer shell and an aluminum inner liner, it ensures a secure, leak-proof connection while maintaining optimal thermal insulation. This elbow is perfect for completing professional-grade installations of gas furnaces, boilers, and water heaters, ensuring safe and efficient removal of combustion gases from the building.
Type: Metal Venting
Size: 4 Inch Diameter
Dimensions: 4 inch diameter × 4 inch diameter × Adjustable
Application: Used for venting gas-fired appliances such as furnaces, water heaters, and boilers; suitable for Type B gas vent installations.
Specifications: Double-wall construction, adjustable from 0 to 90 degrees, lock-tab assembly for secure connection, UL listed for safety compliance.