20" x 34" or 34" x 20" Cube Core Eggcrate Return Air Grille Filter Grille + Product Details Size -

+ Product Details Size - 10"w X 10"h X 2"d (for duct opening measurement only)

width: 22px

The integral design allows you to easily adjust the curved blades

actual front end outer dimensions are approximately 16 5/8" width X 27 5/8" height

20" x 34" or 34" x 20" Cube Core Eggcrate Return Air Grille Filter Grille + Product Details Size -+ Product Details Size 20" x 34" or 34" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 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