14" x 32" or 32" x 14" Cube Core Eggcrate Return Air Grille w34h34 12" Circular Round Aluminum HVAC

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

+ Product Details Size – 18"w X 6"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 22" OR 22" x 18" duct opening (measured at the opening)

With a 4" diameter for the duct opening measurement

Actual Filter Size – 7 3/4"w x 23 3/4" x 1"

14" x 32" or 32" x 14" Cube Core Eggcrate Return Air Grille w34h34 12" Circular Round Aluminum HVAC+ Product Details Size 14" x 32" or 32" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 75" X 33. 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