24" x 30" or 30" x 24" Cube Core Eggcrate Return Air Grille Grille + Product Details Perfect Fit 4 X 12 Is CRFG2028 Width_14in

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 28" OR 28" X 14" duct opening (measured at the opening)

+ Product Details Size - 30"w X 18"h X 2"d (for duct opening measurement only)

Easy Installation: Comes with mounting screws for a secure fit in minutes

Copper coil line set fits most ductless mini split air conditioners

+ Product Details Size – 10" x 16" or 16" x 10" is the size for the duct opening measurement only

24" x 30" or 30" x 24" Cube Core Eggcrate Return Air Grille Grille + Product Details Perfect Fit 4 X 12 Is CRFG2028 Width_14in + Product Details Perfect Fit & Easy Sizing Designed for a 14" x 28" OR 28" X 14" duct opening (measured at the opening) + Product Details Size 30"w X 18"h X 2"d (for duct opening measurement only)