Telescoping Flue Extension For Ispira Wcb3 Chimney Range Hood In 10-Foot Ceilings. These Decorative Chimney Extensions Are Specially Designed For Ceilings Of 9 Or 10 Feet To Hide The Duct And Keep The Beauty In Your Kitchen. (Ul)(Li)Seamless Construction(/Li)(Li)Designed For Ducted Applications Only(/Li)(Li)Simply Replaces Upper Section Of Standard Flue Extension That Comes With Hood(/Li)(/Ul)