26" x 32" or 32" x 26" Cube Core Eggcrate Return Air Grille Color_Red Oak Wood + Product Details Size –

+ Product Details Size – 10" x 18" or 18" x 10" is the size for the duct opening measurement only

+ Product Details Size – 34"w X 24"h is the size for the duct opening measurement only

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Upgrade to a new standard of air quality and aesthetics with our Aluminum Ceiling Diffuser

26" x 32" or 32" x 26" Cube Core Eggcrate Return Air Grille Color_Red Oak Wood + Product Details Size –+ Product Details Size 26" x 32" or 32" x 26" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27. 75" X 33. 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