AC Infinity 6-In Backdraft Damper — One-Way Duct Insert for 6-In Ducting

Overview

The AC Infinity 6-In Backdraft Damper is a compact, purpose built insert for 6-inch ducting in range hoods, bathroom fans, and other home HVAC paths. Its design focuses on minimizing unwanted airflow while staying easy to install and durable enough for daily use. The combination of a galvanized steel body, spring-loaded aluminum damper blades, and outer rubber gaskets aims to provide a reliable seal without adding significant resistance to airflow. With a product length of 5.03 inches and a powder coated finish, this damper is built to endure typical kitchen and bathroom environments.

Why it matters

Backdraft prevention is a practical consideration for many homes. By reducing reverse airflow, this damper helps keep conditioned air from escaping through exhaust ducts and helps prevent debris from entering the ductwork. The result is a cleaner, more efficient venting path that can support your existing range hood and bathroom fan setups without major modifications.

Key benefits

• Airtight seal: Outer rubber gaskets create a secure connection between the damper and ducts, helping minimize air leakage.
• Backflow control: Spring-loaded aluminum blades respond to changing airflow, opening with minimal effort and closing when airflow stops.
• Versatile mounting: Designed to mount horizontally or vertically to suit different duct layouts and installation constraints.
• Durable construction: Galvanized steel body with a powder coated finish resists corrosion in humid kitchen and bathroom environments.
• Right fit for 6-inch ducts: Specifically sized for 6 in. duct openings, with a compact 5.03 inch length for tight spaces.

Real-life use cases

Install this damper behind a kitchen range hood to help prevent backdraft when the hood is off. In bathrooms, it can reduce the post-use draft that sometimes pulls odors back into living spaces. The robust build and gasket seal make it suitable for frequently cleaned or humid areas, offering durable performance without frequent replacements.

What you get and how to think about installation

• Solid, corrosion-resistant components that hold up with daily use
• Simple orientation options to fit your existing ductwork
• Low-profile presence that fits into limited spaces
• Clear, factory-set dimensions to help with planning and compatibility

Product specs at a glance

• Fit: 6 inch duct openings
• Length: 5.03 inches
• Finish: Powder coat
• Construction: Galvanized steel body; spring-loaded aluminum damper blades