14" x 34" or 34" x 14" Cube Core Eggcrate Return Air Grille 6" Diameter 2 recessed screw holes on

2 recessed screw holes on each side with screws included

+ Product Details Size – 28"w X 20"h is the size for the duct opening measurement only

+ How To Measure A Grille Overall Size:

+ Product Details Size - 16"w X 12"h is the size for the duct opening measurement only

Universal Fit – With dimensions of 4-1/8" wide x 7-1/16" high x 2-1/8"

14" x 34" or 34" x 14" Cube Core Eggcrate Return Air Grille 6" Diameter 2 recessed screw holes on+ Product Details Size 14" x 34" or 34" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 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