G.A.S Ducting Reducer – Aluminium Duct Adaptor

Make a mismatched fan, filter and ducting fit together properly

This Ducting Reducer steps a larger fan or filter outlet down to a smaller diameter of ducting, the common fix when your extraction fan is a size up from the ducting or vent it needs to connect to. It's pressed from quality G.A.S metalwork in a clean aluminium finish, so it seats securely under a clamp and won't rattle loose or corrode in a humid grow room.

Key Benefits

• Size adaptation between mismatched fan, filter and ducting diameters
• Aluminium construction for a rigid, corrosion-resistant fit
• Clean pressed finish that seats tightly with standard fast clamps or jubilee clips
• Airtight transition that keeps extraction efficient with no leaks

Fan and ducting sizes that don't match?

Trying to force oversized ducting onto a smaller fan spigot (or vice versa) leaves gaps that leak air, kill static pressure and let odour escape. A properly sized reducer gives both ends a solid, sealed seat so the run stays airtight and quiet.

How to Use

• Fit the wider end onto your fan or filter outlet
• Fit the narrower end onto your ducting
• Secure both joins with a fast clamp or jubilee clip to keep the connection airtight