The Windster 30W in. RA-35 Series Duct Cover makes sure your new range hood is installed at a comfortable height no matter the size of your ceiling. If your kitchen is blessed with a higher ceiling (between 9- and 10.5-feet tall), you'll find this duct cover an indispensable accessory for your Windster RA-35 series wall-mounted range hood. The cover is crafted from solid, sturdy stainless steel with a soft-edged, seamless design. The duct cover has been approved for use by the CSA for use in both US and Canadian homes.