20" x 32" or 32" x 20" Cube Core Eggcrate Return Air Grille Fixed Blades with Damper Can be hooked up with

Can be hooked up with our "Butterfly Dampers" for precise airflow control

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+ Product Details Size – 16"w X 8"h is the size for the duct opening measurement only

and smooth surface

High Quality – High quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

20" x 32" or 32" x 20" Cube Core Eggcrate Return Air Grille Fixed Blades with Damper Can be hooked up with+ Product Details Size 20" x 32" or 32" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 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