6" x 34" or 34" x 6" Cube Core Eggcrate Return Air Grille sidewall Actual Filter Size – 19

Actual Filter Size – 19 3/4"w x 23 3/4" x 1"

actual front end outer dimensions are approximately 28 5/8" width X 36 5/8" height

Achieve the perfect airflow with adjustable control by rotating the middle disk

10" Diameter Is The Size For The Duct Opening Measurement Only

6" x 34" or 34" x 6" Cube Core Eggcrate Return Air Grille sidewall Actual Filter Size – 19+ Product Details Size 6" x 34" or 34" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 75" X 35. 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