22" x 30" or 30" x 22" Cube Core Eggcrate Return Air Grille Insulated Line accordion-header h2

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+ Product Details Size - 20"w X 20"h is the size for the duct opening measurement only

Filter Grille features a user-friendly plastic latch that requires no screwdriver for opening

Actual Filter Size – 29 3/4"w x 17 3/4" x 1"

Design – Heavier gauge than needed

22" x 30" or 30" x 22" Cube Core Eggcrate Return Air Grille Insulated Line accordion-header h2+ Product Details Size 22" x 30" or 30" x 22" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 23. 75" X 31. 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