16" x 34" or 34" x 16" Cube Core Eggcrate Return Air Grille 1-Way + Product Details Size –

+ Product Details Size – 16"w X 26"h is the size for the duct opening measurement only

75"H – fits a 14" X 12" duct opening

it ensures long-lasting durability

+ Product Details Size - 25"w X 18"h is the size for the duct opening measurement only

Universal Fit – Dimensions of 6-3/8" wide x 3-1/2" high x 3" deep make it compatible with most standard thermostat models

16" x 34" or 34" x 16" Cube Core Eggcrate Return Air Grille 1-Way + Product Details Size –+ Product Details Size 16" x 34" or 34" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 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