22" x 34" or 34" x 22" Cube Core Eggcrate Return Air Grille w20h20 actual front end outer dimensions

actual front end outer dimensions are approximately 16 5/8" width X 28 5/8" height

+ Product Details Size – 20" x 30" or 30" x 20" is the size for the duct opening measurement only

Superior Airflow Control: Built-in damper lets you control how much air enters your room

Actual Front End Outer Dimensions Are 14" Diameter

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 34" OR 34" x 18" duct opening (measured at the opening)

22" x 34" or 34" x 22" Cube Core Eggcrate Return Air Grille w20h20 actual front end outer dimensions+ Product Details Size 22" x 34" or 34" x 22" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 23. 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