THERMADOR 18'' x 35'' Telescoping Duct Cover for Professional Chimney Wall Hood

Optional 18''-35'' telescopic duct cover accessory to use with 36'' Professional chimney wall hoods. Regular care helps keep your duct cover performing its best for cleaner air in the kitchen. To determine the placement of the hood with a duct cover extension, the height of the extension must be calculated (see the hood installation instructions).