4-Inch Circular Inline Backdraft Damper - Butterfly Action Draft Shutter, 100mm - Airflow Control

Sold & shipped by Blauberg UK

Available online only and not stocked in B&Q stores

19.36

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Product details

Functionality:

Automatically shuts off air ducts.

Prevents back drafting when the fan is off.

Compatibility:

Fits Ø 100 to 315 mm round air ducts.

Design:

Durable galvanized steel case.

Spring-loaded aluminum blades open with air pressure and close with a spring.

Mounting:

Secures with clamps to round ducts.

Maintains a vertical blade axis.

Installation:

Easily integrates into ventilation systems respecting air flow direction.

Fits Any Size: Our air duct gadget is like a superhero for your ventilation needs – it fits perfectly into any round duct (Ø 100 mm). The specifics? It's 99 mm in diameter, 80 mm in length, and weighs just 0.18 kg – making installation a breeze without sacrificing reliability.
Easy Control: This system makes life simpler by automatically closing air ducts when needed, giving you one less thing to worry about. Plus, it's smart enough to prevent back drafting when the fan isn't running, keeping everything safe and sound.
Built to Last: Designed with toughness in mind, this device comes in a strong steel case. The special aluminum blades inside respond to air pressure and close up snugly with a spring, ensuring it stays reliable for the long haul.
Easy Setup: Setting up is a breeze – just use the provided clamps for a secure fit on your round ducts. Plus, it keeps the blades in a straight-up position, so you don't have to worry about anything going wonky.
Blends Right In: Installing this gadget is a no-fuss process, and it plays nice with your ventilation system's airflow. It easily becomes part of the team without causing any disruptions. Simple, effective, and stress-free!