10" x 36" or 36" x 10" Cube Core Eggcrate Return Air Grille w14h14 + Product Details Size –

+ Product Details Size – 22"w X 16"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 24" duct opening (measured at the opening)

1/4” - 6518 PSI

Designed for a 1" thick filter

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10" x 36" or 36" x 10" Cube Core Eggcrate Return Air Grille w14h14 + Product Details Size –+ Product Details Size 10" x 36" or 36" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" X 37. 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