6" x 26" or 26" x 6" Cube Core Eggcrate Return Air Grille w16h16 + Product Details Size -

+ Product Details Size - 22"w X 26"h is the size for the duct opening measurement only

+ Product Details Size - 20"w X 8"h is the size for the duct opening measurement only

Actual Front End Outer Dimensions Are 16" Diameter

Actual Filter Size – 7 3/4"w x 13 3/4" x 1"

6" x 26" or 26" x 6" Cube Core Eggcrate Return Air Grille w16h16 + Product Details Size -+ Product Details Size 6" x 26" or 26" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 75" X 27. 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