Your elegant high-ceilinged kitchen shouldn't prevent your from installing a range hood. The Windster RA-2390 Series Extension Duct Cover is an extension kit for ceilings between 9- and 10.5-feet tall, connection your ventilation hood to its duct while keeping the intake port at the preferred 28- to 32-inches above the cooking surface. Intended for used with Windster brande RA-2390 wall-mounted range hoods, this duct cover comes with a solid stainless steel construction that's both seamless and smoothed-edge, thanks to the superior welding techniques employed by Windster. The duct cover has been approved for use by the CSA for use in both US and Canadian homes.About Windster Hoods For over a decade, Windster Hoods has provided North American consumers with superior-quality range hoods, filters, and other ventilation and kitchen equipment. Each unit produced by Windster Hood is designed to meet or exceed the standards defined by the CSA, conforming to governmental and regulatory codes. Windster products are constructed with a focus on safety and functionality, featuring smooth edges, single-piece designs, and precise welding. Since 2003, Windster has risen to become a trusted name and industry leader. Under-cabinet, wall-mounted, island units and more are all produced on-site and delivered directly to business owners from the Windster warehouses.