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Back Draft Shutter 150 mm Metal
The Back Draft Shutter 150 mm Metal provides one-way airflow protection in Ø150 mm ventilation ducts. A popular choice for mechanical ventilation units (MVHR), larger bathrooms, residential kitchens and medium-sized grow rooms. Fully passive operation — no power required. Metal build for lasting durability in humid conditions.
Back Draft Shutter 150 mm Metal – The mid-range choice for residential and semi-pro systems
The 150 mm diameter sits between the widely used 125 mm and the more industrial 160 mm — making the Back Draft Shutter 150 mm Metal a natural fit for residential mechanical ventilation units (MVHR/HRV), larger bathroom extraction systems, well-equipped kitchen ventilation and medium-scale grow rooms. Like all back draft shutters, it works entirely passively: airflow opens the flap, gravity closes it when the fan stops. No wiring, no settings, no maintenance. Browse all sizes in our back draft shutter category.
Particularly suited to MVHR systems
Mechanical ventilation with heat recovery (MVHR) systems frequently use 150 mm ducting. A back draft shutter is essential in these setups to prevent stale or conditioned air from flowing in the wrong direction during system pauses. The metal construction holds up reliably through the repeated daily cycles these systems demand.
Complete your ventilation setup
This coupler connects two Ø150 mm air tubes with no modifications needed. To reduce extractor noise at the same time, pair it with a soundproof casing 150 mm. Fast delivery across Belgium.
Is the Back Draft Shutter 150 mm suitable for MVHR or heat recovery ventilation systems?
Yes — 150 mm ducting is commonly used in MVHR and HRV systems, and a back draft shutter is recommended to prevent reverse airflow during standby periods. The metal version is particularly well suited to these systems due to its durability and reliable seal over repeated open-close cycles.