8" x 16" or 16" x 8" Cube Core Eggcrate Return Air Grille Fixed Blades with Damper Produced in accordance with ISO

Produced in accordance with ISO 9001-2008 Quality Management System

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controlled by a switch

All of these grills have dampers

And is classified as Class 1 Fire Proof - B1

8" x 16" or 16" x 8" Cube Core Eggcrate Return Air Grille Fixed Blades with Damper Produced in accordance with ISO+ 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