6" x 26" or 26" x 6" Cube Core Eggcrate Return Air Grille White Example: If your hole is

Example: If your hole is 20" wide by 14" tall

75"H – fits a 16" X 6" duct opening

8" Circular Round Aluminum HVAC Supply Grille Air Diffuser - With Butterfly Damper - Vent Duct Cover

+ Product Details Size - 36"w X 14"h is the size for the duct opening measurement only

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

6" x 26" or 26" x 6" Cube Core Eggcrate Return Air Grille White Example: If your hole is+ Product Details Size 6" x 26" or 26" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 75" X 27. 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