16" x 22" or 22" x 16" Cube Core Eggcrate Return Air Grille Powder-Coat The premium durable material guarantees

The premium durable material guarantees that they will never rust or wear through

actual front end outer dimensions are approximately 30 5/8" width X 24 5/8" height

+ Product Details Size – 26"w X 8"h is the size for the duct opening measurement only

Actual Filter Size – 7 3/4"w x 23 3/4" x 1"

+ Product Details Size – 20"w X 28"h is the size for the duct opening measurement only

16" x 22" or 22" x 16" Cube Core Eggcrate Return Air Grille Powder-Coat The premium durable material guarantees+ Product Details Size 16" x 22" or 22" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 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