18" x 22" or 22" x 18" Cube Core Eggcrate Return Air Grille Compatible With Duct 6in Ideal for Walls & Ceilings: 4 X 12 Is CRFG2028 Width_14in

Ideal for Walls & Ceilings: Designed for seamless installation in standard 24" X 4" duct openings

Width vs Height

+ Product Details Size - 28"w X 22"h is the size for the duct opening measurement only

Actual Front End Outer Dimensions Are 12" Width X 5" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

actual front end outer dimensions are approximately 30 5/8" width X 32 5/8" height

18" x 22" or 22" x 18" Cube Core Eggcrate Return Air Grille Compatible With Duct 6in Ideal for Walls & Ceilings: 4 X 12 Is CRFG2028 Width_14in Ideal for Walls & Ceilings: Designed for seamless installation in standard 24" X 4" duct openings Width vs Height