28" x 34" or 34" x 28" Cube Core Eggcrate Return Air Grille 18" Round Duct Pipe actual front end outer dimensions

actual front end outer dimensions are approximately 38 5/8" width X 34 5/8" height

Powder-coat finish – Smooth

+ Product Details Size – 20"w X 22"h is the size for the duct opening measurement only

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14"w X 3"h Is The Size For The Duct Opening Measurement Only

28" x 34" or 34" x 28" Cube Core Eggcrate Return Air Grille 18" Round Duct Pipe actual front end outer dimensions+ Product Details Size 28" x 34" or 34" x 28" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 29. 75" X 35. 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