The Vents US KOM U 100 Spring-Loaded Backdraft Damper is designed for round duct systems. This essential component ensures the prevention of backdraft (and insects, birds, etc) when the ventilation system is inactive. Its operation is intuitive – the blades automatically open when air flows through, and they securely close thanks to a robust spring mechanism.

Designed for easy installation, this damper is seamlessly integrated into round air ducts and secured in place with clamps. Crafted from high-quality galvanized steel housing, it features precision-engineered aluminium blades with spring-loaded action. To enhance performance and reduce noise, the damper is equipped with foamed rubber seals that provide both noise absorption and exceptional air tightness.

Perfect Solution for Bathrooms, Cottages, Kitchens, Apartments and Tiny Homes. 

Bulk Order?, you bet! Feel free to give us a call or drop us an email, and we'll be happy to chat about quantity discounts for your project!

Features:

• 24/26 gauge Galvanized Steel construction
• Compatible with a 4" duct
• Spring Loaded Damper
• Rubber Seal