16" x 30" or 30" x 16" Cube Core Eggcrate Return Air Grille 8in diameter + Product Description Upgrade your

+ Product Description Upgrade your HVAC system with our 6" Round Air Vent Supply Grille

Perforated steel grille for return air flow

75" width X 15

polished brass

16" x 30" or 30" x 16" Cube Core Eggcrate Return Air Grille 8in diameter + Product Description Upgrade your+ Product Details Size 16" x 30" or 30" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" X 31. 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