12" x 32" or 32" x 12" Cube Core Eggcrate Return Air Grille Aluminum Adjustable Curved Blade Installation of the vents will

Installation of the vents will eliminate the need to raise the door ensuring security and constant air flow and reduced heat transfer into attics and adjacent house walls

+ Product Details Size – 12"w X 22"h is the size for the duct opening measurement only

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 8" duct openings

Actual Filter Size – 31 3/4"w x 19 3/4" x 1"

+ Product Details Size – 22"w X 18"h is the size for the duct opening measurement only

12" x 32" or 32" x 12" Cube Core Eggcrate Return Air Grille Aluminum Adjustable Curved Blade Installation of the vents will+ Product Details Size 12" x 32" or 32" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 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