12" [Duct Opening] Round Ceiling Diffuser - Easy Air Flow - HVAC Vent Duct Cover [White] - [Total Outer Dimensions: 16"] 3-Way or 4-Way This versatile solution enhances air

This versatile solution enhances air supply and adds a touch of class to your space

and then smoothly drop in the grill

+ Product Details Size – 18"w X 16"h is the size for the duct opening measurement only

+ Product Details Size - 4"w X 30"h is the size for the duct opening measurement only

12" [Duct Opening] Round Ceiling Diffuser - Easy Air Flow - HVAC Vent Duct Cover [White] - [Total Outer Dimensions: 16"] 3-Way or 4-Way This versatile solution enhances air+ Product Details Size The listed 12" diameter refers specifically to the size of the duct opening. However, please note that the total outer dimensions of the grille measure 16" in diameter. Design Heavier gauge than needed, built for durability and long life in mind, but still light and handy. (Screws included). Airflow Easy unrestricted airflow for your HVAC system. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was