20" x 24" or 24" x 20" Cube Core Eggcrate Return Air Grille Compatible With Duct 6in One model suits both T-Bar

One model suits both T-Bar and Drywall installations

no sharp edges

+ Product Details Size - 28"w X 32"h is the size for the duct opening measurement only

+ Product Details Size – 16"w X 30"h is the size for the duct opening measurement only

to Ensure Perfect Smooth Finish

20" x 24" or 24" x 20" Cube Core Eggcrate Return Air Grille Compatible With Duct 6in One model suits both T-Bar+ Product Details Size 20" x 24" or 24" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 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