14" x 34" or 34" x 14" Cube Core Eggcrate Return Air Grille 18" Diameter + Product Description This aluminum

+ Product Description This aluminum flex duct is intended to be used in heating

actual front end outer dimensions are approximately 30 5/8" width X 18 5/8" height

75" Width X 37

+ Product Details Size – 22"w X 6"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 32 5/8" width X 26 5/8" height -

14" x 34" or 34" x 14" Cube Core Eggcrate Return Air Grille 18" Diameter + Product Description This aluminum+ 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