Air duct reducers

Air Vent Duct Pipe Reducer Ventilation Reduction Downpipe

75mm to 60mm Air Outlet Adapter Duct Reducer for Webasto Diesel Heaters Compatible with Heating Air Outlet Systems

Portable Air Conditioner Hose Reducer, Ø 100–150 mm Reducer with 2 Stainless Steel Clamps, Universal Adapter, Duct Reducer for Ventilation System (150-100 mm)

[NEVER USED] Black conversion interface for fresh air system, square to round flange interface, fan vent, exhaust port

Universal Improved Thicker Reducer for Ventilation Systems 100/200mm Diameter PVC Round Pipe Reducer Used with Air Conditioning for Ducts and Exhaust Fans (10-20cm)

Improved, thicker universal reducer for ventilation systems, 80/200mm diameter, PVC round pipe reducer used with air conditioning for ducts and extraction fans (8–20 cm)

ABS duct adapter 150 mm to 100 mm – Ventilation reducer for air extractor – Pack of 2

Silent 3/4" 25mm Air Compressor – Noise Reducer for Screw and Piston Compressors – Effective Dust Filter