8" x 36" or 36" x 8" Cube Core Eggcrate Return Air Grille w32h32 accordion dd ul li {

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Actual Filter Size – 17 3/4"w x 31 3/4" x 1"

color: #333

+ Product Details Durable Construction - Made with clear

+ Product Details Size – 22"w X 8"h is the size for the duct opening measurement only

8" x 36" or 36" x 8" Cube Core Eggcrate Return Air Grille w32h32 accordion dd ul li {+ Product Details Size 8" x 36" or 36" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 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