34" x 36" or 36" x 34" Cube Core Eggcrate Return Air Grille Curved Blade Steel Actual Filter Size – 29

Actual Filter Size – 29 3/4"w x 27 3/4" x 1"

+ Product Details Size - 25"w X 16"h is the size for the duct opening measurement only

this model allows for mounting without removing the thermostat

+ Product Details Size – 20"w X 30"h is the size for the duct opening measurement only

Its sleek contours bring a touch of modern sophistication to any room

34" x 36" or 36" x 34" Cube Core Eggcrate Return Air Grille Curved Blade Steel Actual Filter Size – 29+ Product Details Size 34" x 36" or 36" x 34" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 35. 75" X 37. 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