You can't afford to take any chances when it comes to kitchen ventilation. With the new Broan Ductless Kit, you'll get the best ventilation system on the market without any ducts. With two removable non-duct filters and a 6 Inch diameter flexible aluminum duct, this kit will filter your air and recirculate it back into your kitchen. In addition, this optional accessory is compatible with EW46 Series Chimney Range Hoods. Range hoods run more efficiently and last longer when equipped with high-quality filters. Simple setup: with everything you need included in one package, getting started is a breeze.