Using this Panasonic Hepa filter is easy. Just open your MC - CG710 or MC - CG712 barrel vacuum cleaner and replace the old filter with this new one. Make sure it fits snugly. As for the note, always turn off the vacuum cleaner before replacing the filter to avoid any accidents. For maintenance, remember to renew the filter every year. This will keep your vacuum cleaner running at its best and ensure high - quality air filtration.