30" x 36" or 36" x 30" Cube Core Eggcrate Return Air Grille Compatible With Duct 6in reducing electric bills and extending

reducing electric bills and extending HVAC machine lifespan

actual front end outer dimensions are approximately 36 5/8" width X 22 5/8" height

+ Product Details Size - 12"w X 10"h is the size for the duct opening measurement only

Ring Base Design – Allows for easy installation without removing the thermostat

30" x 36" or 36" x 30" Cube Core Eggcrate Return Air Grille Compatible With Duct 6in reducing electric bills and extending+ Product Details Size 30" x 36" or 36" x 30" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 32. 5" X 38. 5". 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