22" x 22" Cube Core Eggcrate Return Air Grille Color_White + Product Details Size -

+ Product Details Size - 36"w X 4"h is the size for the duct opening measurement only

Actual Filter Size – 29 3/4"w x 33 3/4" x 1"

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actual front end outer dimensions are approximately 32 5/8" width X 38 5/8" height

and squirrels

22" x 22" Cube Core Eggcrate Return Air Grille Color_White + Product Details Size -+ Product Details Size 22" x 22" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 23. 75" X 23. 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