16" x 32" or 32" x 16" Cube Core Eggcrate Return Air Grille Aluminum Bar while the ingenious dial-controlled damper

while the ingenious dial-controlled damper empowers you to effortlessly regulate airflow using your foot

+ Product Description Upgrade your HVAC system with a high-quality aluminum return grille designed for a clean

+ Product Details Size - 6"w X 30"h is the size for the duct opening measurement only

+ Product Details Size – 18"w X 30"h is the size for the duct opening measurement only

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

16" x 32" or 32" x 16" Cube Core Eggcrate Return Air Grille Aluminum Bar while the ingenious dial-controlled damper+ Product Details Size 16" x 32" or 32" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 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