8" x 22" or 22" x 8" Cube Core Eggcrate Return Air Grille w24h24 + Product Details Size -

+ Product Details Size - 36"w X 16"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 36 5/8" width X 32 5/8" height

It has an outer surface made of high-quality aluminum foil and an inner surface made of metalized PET with inside high-tensile spring steel wire

Powder-Coat Finish – smooth

8" x 22" or 22" x 8" Cube Core Eggcrate Return Air Grille w24h24 + Product Details Size -+ Product Details Size 8" x 22" or 22" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 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