10" x 16" or 16" x 10" Cube Core Eggcrate Return Air Grille w8h8 + Product Details Size –

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

+ Product Details Size - 30"w X 14"h is the size for the duct opening measurement only

1-1/8" - 2334 PSI

actual front end outer dimensions are 13

3/4” - 2981 PSI

10" x 16" or 16" x 10" Cube Core Eggcrate Return Air Grille w8h8 + Product Details Size –+ Product Details Size 10" x 16" or 16" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" X 17. 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