Make a mismatched fan, filter and ducting fit together properlyThis 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
