8" x 34" or 34" x 8" Cube Core Eggcrate Return Air Grille w28h28 75" Width X 19

75" Width X 19

Just run your finger along the edge of the top plate and you’ll find a smooth finished surface

And Meets/Beats ASTM B280 Standard

+ Product Details Size – 8" x 28" or 28" x 8" is the size for the duct opening measurement only

8" x 34" or 34" x 8" Cube Core Eggcrate Return Air Grille w28h28 75" Width X 19+ Product Details Size 8" x 34" or 34" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" X 35. 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