30" x 34" or 34" x 30" Cube Core Eggcrate Return Air Grille 10in diameter actual front end outer dimensions

actual front end outer dimensions are approximately 16 5/8" width X 22 5/8" height

+ Product Description Protect and secure your thermostat with this high-quality Clear Plastic Thermostat Guard

+ Product Details Size - 6"w X 20"h is the size for the duct opening measurement only

Mounted with frame and bayonet joint which are included

+ Product Details Size - 36"w X 20"h is the size for the duct opening measurement only

30" x 34" or 34" x 30" Cube Core Eggcrate Return Air Grille 10in diameter actual front end outer dimensions+ Product Details Size 30" x 34" or 34" x 30" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 32. 5" X 36. 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