The Windster 36W in. WS-38 Series Ductless Kit provides a convenient alternative for your new under-cabinet range hood. Your available duct might not fit your new Windster brand range hood (intended for the 36-inch wide WS-38 models only) and this unit allows you to recirculate the air through a charcoal filter to fully purify the air of smoke, grease vapors, offensive odors, and more. The piece comes constructed from solid stainless steel and is defined by smooth edges and a seamless look. This ductless kit has been approved for use by the CSA for use in both US and Canadian homes.