638-213

The 4" B-Vent to B-Vent Adaptor is a critical component for ensuring a secure and reliable connection in gas-fired appliance exhaust systems. Designed specifically for 4-inch double-wall gas vent piping, this adapter allows for seamless transitions between venting sections, maintaining the necessary airtight seal for safe operation. Ideal for use with residential and commercial HVAC equipment, such as gas furnaces, water heaters, and boilers, this metal venting accessory helps manage combustion byproducts effectively. Its durable construction is engineered to withstand the heat and environmental demands of exhaust venting while meeting standard safety requirements for Type B gas vents. Whether you are completing a new installation or repairing an existing system, this adapter provides the structural integrity needed for a professional-grade venting solution.
Type: Metal Venting / HVAC Exhaust Component
Size: 4 Inch
Dimensions: Not specified × 4-inch diameter × Not specified
Application: Used to connect sections of double-wall B-vent piping in gas-fired heating systems. Compatible with generic gas appliances including furnaces, boilers, and residential water heaters.
Specifications: Type B Gas Vent compatible; double-wall construction; heat-resistant metal finish; secure-lock or friction-fit design for gas-tight seals.