8" x 14" or 14" x 8" Cube Core Eggcrate Return Air Grille White It has an outer surface

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

+ Product Details Size - 24"w X 2"h is the size for the duct opening measurement only

+ Product Details Size – 12" X 2" is the size for the duct opening (floor/vent hole) measurement only

+ Product Details Size - 12"w X 14"h is the size for the duct opening measurement only

8" x 14" or 14" x 8" Cube Core Eggcrate Return Air Grille White It has an outer surface+ Product Details Size 8" x 14" or 14" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" X 15. 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