Back Draft Shutter

Back Draft Shutter

A Back Draft Shutter is essential for maintaining control over airflow, odour, and temperature in any grow room ventilation system. Designed to prevent air from entering or escaping when extraction and intake fans are switched off, they provide an automatic and reliable way to stabilise your environment during dark cycles or downtime.

Each shutter contains two lightweight aluminium blades that sit securely against a rubber seal. When your fans are off, internal springs keep the blades tightly closed, preventing cold air from being drawn in or warm, humid air from leaking out. As soon as your fans power on, the airflow pushes the blades open instantly, allowing unrestricted, efficient air movement through your ducting.

These shutters are particularly useful in grow rooms that get cold at night or where odour control is critical. With a simple in-line design, they are easy to install using standard ducting, jubilee clips, or X-Weave tape. Just ensure the blades face the correct direction to allow proper airflow.

Durable, effective, and available in all major ducting sizes, Back Draft Shutters are a reliable addition to any ventilation system, helping growers maintain stable temperatures and prevent unwanted smells from escaping.

Key Benefits:

• Prevents backflow when fans are switched off

• Stops unwanted odours escaping through ducting

• Helps stabilise temperature during dark cycles

• Automatic spring-loaded blades open with airflow

• Airtight rubber seal ensures effective closure

• Lightweight aluminium blades for smooth operation

• Available in all major ducting sizes

• Simple, quick installation with jubilee clips or tape

• Reliable passive solution — no power required