6" [Duct Opening] Round Ceiling Diffuser - Easy Air Flow - HVAC Vent Duct Cover [White] - [Total Outer Dimensions: 10"] Aluminum Bar Locking Security System – Features

Locking Security System – Features a built-in eight-tumbler lock and a supplied key to prevent tampering and maintain consistent temperature settings

the actual front end outer dimensions are 10" in diameter

allowing unrestricted airflow for optimal HVAC performance

+ Product Details Size – 30"w X 10"h is the size for the duct opening measurement only

+ Product Details Size - 16"w X 20"h is the size for the duct opening measurement only

6" [Duct Opening] Round Ceiling Diffuser - Easy Air Flow - HVAC Vent Duct Cover [White] - [Total Outer Dimensions: 10"] Aluminum Bar Locking Security System – Features+ Product Details Size The listed 6" diameter refers specifically to the size of the duct opening. However, please note that the total outer dimensions of the grille measure 10" 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