Metal-Fab 4MIX6 Vent Increaser 4″x 6″ B-Vent Connector LP Gas Natural HVAC

Metal-Fab 4MIX6 4″ to 6″ B-Vent Increaser – Gas Appliance Vent Pipe AdapterThe Metal-Fab 4MIX6 increaser is a high-quality vent connector designed to increase B-vent pipe diameter from 4 inches to 6 inches. This component is critical in gas venting systems where appliance or ductwork transitions require safe, code-compliant diameter changes.Built from galvanized steel, the 4MIX6 ensures corrosion resistance and long-term performance in vent systems for propane, LP gas, and natural gas appliances such as water heaters, furnaces, or boilers.Compatible with Type B gas vent systems, this increaser allows for fast installation with its crimped edge, ensuring a secure fit to adjoining pipe sections. It is part of Metal-Fab’s trusted line of venting components widely used by HVAC professionals across residential and light commercial applications.Specifications:Connection: 4″ (female) to 6″ (male)Construction: Galvanized SteelApplication: B-Vent, LP/Natural Gas appliance ventingInstallation Type: Press-fit, crimped jointEnsure safe and proper exhaust sizing with this durable, UL-listed B-vent fitting.

Important Notice – Propane Parts, Accessories, and Regulators

This product, including but not limited to propane parts, accessories, fittings, hoses, valves, and regulators, must be installed and serviced by a licensed professional in accordance with all applicable local, state, and federal codes, regulations, and standards.

The seller assumes no responsibility for the installation, inspection, application, maintenance, or use of this product.

It is the sole responsibility of the buyer to ensure the product is appropriate for their intended application and that it is installed correctly by a qualified individual.

Improper installation, maintenance, or use of propane products may result in serious injury, death, fire, explosion, or property damage.

The buyer accepts all risks, liabilities, and potential consequences associated with the use of this product.

By purchasing this item, the buyer acknowledges that they have read, understood, and agreed to these terms and confirm that installation and use will be conducted by a properly licensed and qualified professional.