24" x 24" Cube Core Eggcrate Return Air Grille Insulated Line Set R value rating of insulation

R value rating of insulation - R3

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

+ Product Details Size – 2"w X 12"h is the size for the duct opening measurement only

24" x 24" Cube Core Eggcrate Return Air Grille Insulated Line Set R value rating of insulation+ Product Details Size 24" x 24" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 75" X 25. 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 electric