22" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R-8.0 Pink + Product Details Perfect Fit Height_16in RG1612AL Product Details Size 14

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 18" OR 18" X 14" duct opening (measured at the opening)

allowing you to take control of indoor air circulation without complications

+ Product Details Size – 10"w X 28"h is the size for the duct opening measurement only

For 10" Round Duct Opening - Spiral or Flex

Suitable for medium-pressure applications

22" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R 8.0 Pink + Product Details Perfect Fit Height_16in RG1612AL Product Details Size 14 + Product Details Perfect Fit & Easy Sizing Designed for a 14" x 18" OR 18" X 14" duct opening (measured at the opening) allowing you to take control of indoor air circulation without complications