24" x 36" or 36" x 24" Cube Core Eggcrate Return Air Grille Compatible with Duct 6" Actual Filter Size – 19

Actual Filter Size – 19 3/4"w x 27 3/4" x 1"

+ Product Details Size – 22"w X 32"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 32 5/8" width X 26 5/8" height

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

actual front end outer dimensions are approximately 10 5/8" width X 32 5/8" height

24" x 36" or 36" x 24" Cube Core Eggcrate Return Air Grille Compatible with Duct 6" Actual Filter Size – 19+ Product Details Size 24" x 36" or 36" x 24" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 75" X 37. 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