22" x 28" or 28" x 22" Cube Core Eggcrate Return Air Grille Filter Grille order a 20x14

order a 20x14

+ Product Details Size – 6" x 30" or 30" x 6" is the size for the duct opening measurement only

+ Product Details Size – 20" x 20" is the size for the duct opening measurement only

5" Wide x 12" Tall x 2

Actual Filter Size – 13 3/4"w x 5 3/4" x 1"

22" x 28" or 28" x 22" Cube Core Eggcrate Return Air Grille Filter Grille order a 20x14+ Product Details Size 22" x 28" or 28" x 22" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 23. 75" X 29. 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