A reliable Universal Kitchen Hood Backdraft Damper (150 mm) is the perfect solution for keeping unwanted odors and cold drafts out of your home’s ventilation system. This non‑return vent connector fits snugly inside any 6‑inch (150 mm) round duct or a 152 mm flexible hose, making it ideal for air‑conditioner exhausts, cooker hoods, bathroom or kitchen extractor fans, hydroponic fans and in‑line extractors.
How it works
The gravity‑driven damper flap stays closed when airflow stops, blocking reverse air and smells. When the fan runs, internal pressure lifts the flap automatically, allowing fresh air to escape and then snapping back shut as soon as the fan turns off.
Key features
- Diameter: 150 mm (6 in) – fits standard ducts and hoses
- Free flow area: 16 787 mm² for efficient exhaust
- Material: High‑impact white plastic for durability and corrosion resistance
- Temperature range: –15 °C to 60 °C
- Weighted off‑centre hinge that keeps the flap sealed without extra hardware
Why choose this damper?
It’s a universal fit for most brands of vented appliances, easy to install, and requires no tools or modifications. By preventing back‑drafts, it helps maintain indoor comfort and improves the efficiency of your ventilation system.
Keywords: backdraft damper, non‑return vent connector, kitchen hood vent, 150 mm duct valve, air conditioner exhaust, cooker hood ventilation.
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