32" x 32" Cube Core Eggcrate Return Air Grille Compatible With Duct 8in Actual Filter Size – 33

Actual Filter Size – 33 3/4"w x 25 3/4" x 1"

Actual Filter Size – 9 3/4"w x 33 3/4" x 1"

+ Product Details Size - 28"w X 36"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 19

32" x 32" Cube Core Eggcrate Return Air Grille Compatible With Duct 8in Actual Filter Size – 33+ Product Details Size 32" x 32" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 33. 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 electric