Using this lint filter is easy. Just place it in the designated spot in your Haier twin - tub washing machine. It'll catch all the lint and debris during the wash cycle, keeping your clothes clean. As for maintenance, take it out after each wash. Rinse it under running water to remove the trapped lint. Make sure it's completely dry before putting it back. If your model number isn't among the listed ones, don't worry. Just tell us your full model number, and we'll help you figure out if it's a good fit. With our 25 - year experience in the appliance parts business, you can rely on the quality of this filter.