10" Stick on Straight Take Off with Damper | Galvanized Steel Metal | is Compatible with Duct 10" Ductwork With its practical roll-formed lock RFG1820AL Its heavier gauge construction Merv 2

With its practical roll-formed lock construction on all four sides

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 12" OR 12" X 18" duct opening (measured at the opening)

+ Product Details Size – 18"w X 16"h is the size for the duct opening measurement only

5"w X 12"h]

If for any reason you are not 100% satisfied with the filters-we will refund your money

10" Stick on Straight Take Off with Damper Galvanized Steel Metal is Compatible with Duct 10" Ductwork With its practical roll formed lock RFG1820AL Its heavier gauge construction Merv 2 With its practical roll formed lock construction on all four sides + Product Details Perfect Fit & Easy Sizing Designed for a 18" x 12" OR 12" X 18" duct opening (measured at the opening)