Universal Ducting Kit for Outside Extraction | DK1M150 Please note you will need a 160mm hole in your wall to fit the vent that attaches to your external wall. This Quality and Simple to Install Venting Kit allows you to Extract air from your Cooker Hood, outside so you do not need to use filters. The Outside Vent is White and features Flaps that prevent a Draft coming back into your Kitchen. The Flexible Ducting Tube is Foil Based, this Shiny Material helps prevent the Pipe from Absorbing too much heat and meets regulations for cooker hoods. The Tube is 1 Metre (100cm) Long and fits to a 150mm Outlet on your Cooker Hood. It will fit all 150mm Cooker Hood Outlets. 1 metre ducting kit for 150mm cooker hoods What are Cooker Hoods? Cooker Hoods, also known as Extractor Fans, are appliances that use fans to hoover up the smoke, fumes and dirty air coming from your Hob or Cooker. Why do I need a Ducting Kit? Once an Extractor Fan has sucked up air from your Hob or Cooker, you can normally choose to Vent this air outside or force the air through Carbon filters back into your kitchen - known as Recirculating. If you want to Vent or Duct the air outside, one end of the Ducting kit connects to the outlet on the Extractor Fan and the other attaches to a vent that is placed over the hole in your wall. Should I Vent or Recirculate? Vented will always provide a better extraction rate, quieter operation and be cheaper in the long run as you do not need to buy Carbon Filters. However, it does require access to an outside wall through which the Ducting kit can pass, which can be difficult if you are renting or the wall your cooker is against is an internal wall. You may also simply not want to have a hole in your wall.