14" x 28" or 28" x 14" Cube Core Eggcrate Return Air Grille Curved Blade Steel + Why HVAC Premium HVAC

+ Why HVAC Premium HVAC Premium has been providing superior quality service for many years

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+ Product Details Size – 8" x 20" or 20" x 8" is the size for the duct opening measurement only

+ Product Details Size - 28"w X 6"h is the size for the duct opening measurement only

+ Product Details Size - 10"w X 14"h is the size for the duct opening measurement only

14" x 28" or 28" x 14" Cube Core Eggcrate Return Air Grille Curved Blade Steel + Why HVAC Premium HVAC+ Product Details Size 14" x 28" or 28" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 16. 5" X 30. 5". 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