Using your new universal range hood grease filter material is a breeze. First, take out your old filter and use it as a template. Trace the shape onto the new filter material and then carefully cut it to size using scissors. Once cut, place the new filter into your range hood. As you use your range hood, the filter will start trapping grease. Keep an eye on it, as it will slowly turn a reddish color. When it does, it's time to replace the filter. For maintenance, you can simply replace the filter as needed. If you have any questions or need further assistance, don't hesitate to reach out. Remember, we've been in the business for over 25 years and are here to help you keep your kitchen running smoothly.