Features: Made of ABS plastic, eco-friendly and odorless. Available for wall or ceiling mounting. It can be perfectly used for indoor ventilation, reduce noise, and can also be used as decoration. Adjustable: You can change the airflow by turning the switch button on the panel. Easy to use: The panel can be disassembled freely, which is very convenient for cleaning and maintenance. Stylish, compact and sturdy, this air outlet can be used as an air inlet or outlet, great for bathroom, kitchen, office ventilation. Specifications: Material: Plastic Style: New Straight Louver 75mm/ New Straight Louver 100mm/ New Straight Louver 125mm/ New Straight Louver 150mm/ New Straight Louver 200mm/ Pattern 75mm/pattern 100mm/ Pattern 150mm/ Pattern 200mm Straight Louver Opening Size: 75mm(2.95inch)/100mm(3.94inch)/125mm(4.92inch)/150mm(5.90inch)/200mm(7.87inch) Pattern Opening Size: 75mm(2.95inch)/100mm(3.94inch)/150mm(5.90inch)/200mm(7.87inch) Package Includes: 1 Set Air Ventilation Cover note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.