An easy and optimum air filter replacement not only for professional repairmen but also for average home and office users ^^ Made of fine foam, fits in projector perfectly, no modification needed; All you need to do is opening the air filter cover then replace the old one ^^ After changing the air filter, your projector will get better cooling and dust-proof performance; Don't hesitate to replace the air filter when you see a message telling you to clean or replace it ^^ Works with projector models Panasonic PT-RQ13KU, PT-RQ32KU, PT-RS11KU, PT-RS30KU, PT-RZ12KU, PT-RZ31KU ^^ The air filter will be wrapped and packed securely, so you'll get it in great condition; Technical support team will be ready to help you resolve any issues, feel free to post your questions at 'Customer questions & answers' section or simply send us a message