Easy installation: Made of ABS material. This extractor fan vent cover can be securely clamped on pipes and ceilings using the car clips provided. It is also suitable for installation on walls and ceilings, offering flexible placement options for your convenience. Durable and reliable: Crafted from ABS material, this vent cover is built to withstand regular use and effectively prevent dust, debris, and other unwanted particles from entering your space. Flexible sizing options: Available in 4inch and 6inch sizes. This ceiling air vent can cater to different ventilation needs. The two sizes are compatible with a wide range of hoods, fans, and exhaust systems, making it a fit for various applications. Practical use scenarios: Use in kitchen exhaust to protect the vent and maintain airflow at the same time; install in a bathroom exhaust to reduce dust and debris ingress; apply in a laundry or utility room vent to safeguard the duct while allowing proper ventilation.