The Range Rectangular Vent Damper Kit Features Stainless-Steel Construction And Measures 10" L X 3-1/4" W. The Complete Kit Helps Prevent Back Drafts Of Air From Entering The Kitchen Through The Ductwork When Using Your Range. A Universal Accessory, This Duct Connector And Damper Kit Is Designed To Be Used With Many Standard Range Models And Brands; Check Your Model Number To Confirm Compatibility. Installing This Accessory Will Require Basic Hand Tools, Some Disassembly Of The Range And Novice Repair Experience. You Must Unplug The Range Or Shut Off The House Circuit Breaker For The Appliance Before Installing This Part.