8" Inch Collar Duct Connector with Shutter for Flexible Aluminum Hose, Adjustable Flap, HVAC Ventilation Fitting, Easy Installation Adjustable Return + Product Details Size &

+ Product Details Size & Compatibility – The size of galvanized sheet metal straight floor boot is 12" X 6" X 4"

Insulation – A thick blanket of fiberglass insulation provides you with an R-Value of 6

ensuring longevity and resistance to corrosion

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 24" OR 24" x 20" duct opening (measured at the opening)

25" Width X 7

8" Inch Collar Duct Connector with Shutter for Flexible Aluminum Hose, Adjustable Flap, HVAC Ventilation Fitting, Easy Installation Adjustable Return + Product Details Size &Accordion Menu + Product Details Size Diameter Range: Available in a diameter range of 4" to 10", the Exiva Duct Collar can be used with a variety of duct sizes. Material Constructed from durable polypropylene, the Exiva Duct Collar is designed to withstand a wide range of temperatures and demanding conditions in HVAC systems. Design The collar features a smart, user friendly design that includes a flexible air duct connection, ensuring a tight fit