14" x 24" or 24" x 14" Cube Core Eggcrate Return Air Grille 8" Round Duct Pipe Actual Filter Size – 31

Actual Filter Size – 31 3/4"w x 15 3/4" x 1"

with actual front end outer dimensions of 5"

+ Product Details Size – 12" x 28" or 28" x 12" is the size for the duct opening measurement only

+ Product Details Size – 22"w X 12"h is the size for the duct opening measurement only

this guard fits almost any thermostat and blends seamlessly into any setting

14" x 24" or 24" x 14" Cube Core Eggcrate Return Air Grille 8" Round Duct Pipe Actual Filter Size – 31+ Product Details Size 14" x 24" or 24" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 75" X 25. 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