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+ Product Details Size – 34"w X 12"h is the size for the duct opening measurement only
+ Product Details Size – 20"w X 4"h is the size for the duct opening measurement only
Insulation – A thick blanket of fiberglass insulation provides you with an R-Value of 8
+ Product Details Size – 25"w X 22"h is the size for the duct opening measurement only
actual front end outer dimensions are approximately 24 5/8" width X 24 5/8" height
16" x 32" or 32" x 16" Cube Core Eggcrate Return Air Grille 6in diameter + Product Details Size –+ Product Details Size 16" x 32" or 32" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 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