28" x 34" or 34" x 28" Cube Core Eggcrate Return Air Grille w26h26 + Product Details Size -

+ Product Details Size - 28"w X 16"h is the size for the duct opening measurement only

Actual Filter Size – 15 3/4"w x 7 3/4" x 1"

please note that the total outer dimensions of the grille measure 8" in diameter

+ Product Spec Sheet Corner Baseboard Grille Spec Sheet

28" x 34" or 34" x 28" Cube Core Eggcrate Return Air Grille w26h26 + Product Details Size -+ 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