Double Flaps Back Draught Shutter 150mm to 180mm dryer box Including a 4-inch diameter

Including a 4-inch diameter

[Easy Installation]: 4 inch vent includes a pipe extension located underneath the flange for connecting to flex ducting

PVC flexible ducting is designed for ventilation applications includingduct fans and vent exhausts in factories

The refined diameter makes it easier to attach your ducting

Double Flaps Back Draught Shutter 150mm to 180mm dryer box Including a 4-inch diameterDescription 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.