Using your Hako RocketVac XP backpack vacuum cleaner with this Hepa filter is easy. Just remove the old filter and replace it with the new HEPA - RVXP filter. Make sure it's properly installed to ensure maximum suction power. When using, avoid exposing the filter to excessive moisture as it can damage the filter. As for maintenance, check the filter regularly. If it looks dirty or clogged, it's time to replace it. Remember, a clean filter will keep your vacuum cleaner working at its best and help keep the air you breathe clean.