Kair Connector with Backdraught Shutter 100mm 4 inch Non Return Damper Flap to Connect Duct Pipe or Flexible Ducting Hose

100mm / 4 inch plastic ducting connector with inline backdraught shutter / gravity damper flap. Stop smells and prevent cold air coming through your extract fan or ducting. Will fit inside 100mm round pipe or 102mm flexible hose and can be used to join multiple lengths of pipe together to form a long duct run. Perfectly suited for ducting your Tumble Dryer, Bathroom or Kitchen extractor fan, Hydroponics, In-Line Extract Fans, or Cooker Hood and other ventilation applications. Will join any Female part of the Kair ducting range., Weight: 0.09 pounds, Manufacturer: Kair