16" x 32" or 32" x 16" Cube Core Eggcrate Return Air Grille w22h22 Ideal for Walls & Ceilings:

Ideal for Walls & Ceilings: Designed for seamless installation in standard 12" X 6" duct openings

+ Product Details Size – 22" x 36" or 36" x 22" is the size for the duct opening measurement only

Actual Filter Size – 21 3/4"w x 11 3/4" x 1"

ensuring accurate thermostat operation

+ Product Details Size – 22"w X 29"h is the size for the duct opening measurement only

16" x 32" or 32" x 16" Cube Core Eggcrate Return Air Grille w22h22 Ideal for Walls & Ceilings:+ Product Details Size 16" x 32" or 32" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" X 33. 75". High Quality High quality, rust free aluminum construction with smooth finished edges and counter sunk screw holes (screws included); no sharp edges.. Installation Location sidewall and ceiling. Design Cubic core eggcrate design Offers highest airflow efficiency at almost 95%, reducing