12" x 16" or 16" x 12" Cube Core Eggcrate Return Air Grille Powder-Coated with actual outer dimensions of

with actual outer dimensions of 38

+ Product Details Size - 8"w X 4"h is the size for the duct opening measurement only

actual front end outer dimensions are 32" width X 10" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 22" x 10" OR 10" x 22" duct opening (measured at the opening)

Actual Filter Size – 7 3/4"w x 35 3/4" x 1"

12" x 16" or 16" x 12" Cube Core Eggcrate Return Air Grille Powder-Coated with actual outer dimensions of+ Product Details Size 12" x 16" or 16" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 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