20" x 24" or 24" x 20" Cube Core Eggcrate Return Air Grille Compatible With Duct 6in + Product Details Size –

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

14" x 8" Decorative Wood Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction

+ Product Details Size - 30"w X 2"h is the size for the duct opening measurement only

One model suits both T-Bar and Drywall installations

20" x 24" or 24" x 20" Cube Core Eggcrate Return Air Grille Compatible With Duct 6in + Product Details Size –+ 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