Model: SL-BD (Fan Back Draught Shutter)

4" 5" 6" in-line extractor fan vent back draught shutter
In stock Sold out Sold out (Backorder available)
Back Flow/ Back Draught Valve/Shutter for domestic axial fans with flange diameter of 100, 125 and 150 mm.
It provides protection against all kinds of odours that may filter through.