Double Flaps Back Draught Shutter 150mm to 180mm dryer box 【Application】: 8 to 6 inch

【Application】: 8 to 6 inch duct adapter designed for widely used

The stainless steel filter doesn't need to be replaced

and there are four holes in the panel

and is not applicable to ventilation fans

Double Flaps Back Draught Shutter 150mm to 180mm dryer box 【Application】: 8 to 6 inchDescription This backdraught shutter can be used for a variety of purposes including whole house ventilation, passive stack vent, air conditioning, positive pressure, Tumble Dryer Venting, HVAC, and Heat Recovery Systems. Stops unpleasant odours, noises, or draughts flowing back through your duct,Perfectly suited for ducting Bathroom or Kitchen extractor fan, Hydroponics, In Line Extract Fans, or Cooker Hood.