14" x 14" Cube Core Eggcrate Return Air Grille 2-Way With these options

With these options

4" X 10" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

+ Product Details Size – 16"w X 6"h is the size for the duct opening measurement only

And Meets/Beats ASTM B280 Standard

and Centralized Air Ducted Units

14" x 14" Cube Core Eggcrate Return Air Grille 2-Way With these options+ Product Details Size 14" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 75" X 15. 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 electric