26" x 34" or 34" x 26" Cube Core Eggcrate Return Air Grille RV Mobile Home background: #f8f9fb

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 34" OR 34" x 30" duct opening (measured at the opening)

actual front end outer dimensions are approximately 24 5/8" width X 18 5/8" height

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

26" x 34" or 34" x 26" Cube Core Eggcrate Return Air Grille RV Mobile Home background: #f8f9fb+ Product Details Size 26" x 34" or 34" x 26" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27. 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