20" x 26" or 26" x 20" Cube Core Eggcrate Return Air Grille White + Product Details Size -

+ Product Details Size - 10"w X 12"h is the size for the duct opening measurement only

actual front end outer dimensions are 25" Width X 13" Height

The included eight-tumbler lock and supplied key provide secure access

transparent design that complements any setting

+ Product Details Size - 34"w X 10"h is the size for the duct opening measurement only

20" x 26" or 26" x 20" Cube Core Eggcrate Return Air Grille White + Product Details Size -+ Product Details Size 20" x 26 or 26" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" X 27. 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