8" x 16" or 16" x 8" Cube Core Eggcrate Return Air Grille Fixed Blades with Damper + Product Details Size –

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

All of these grills have dampers

controlled by a switch

Whether you choose the modern contemporary

High Quality – Solid rigid steel body for durability and reliability with dampers operable by switch for airflow directional control

8" x 16" or 16" x 8" Cube Core Eggcrate Return Air Grille Fixed Blades with Damper + Product Details Size –+ Product Details Size 8" x 16" or 16" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" X 17. 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