Using this Panasonic Hepa filter is easy. First, turn off your MC - CG524 barrel vacuum cleaner and unplug it from the power source. Then, locate the filter compartment and open it. Take out the old filter and insert the new one in its place. Make sure it fits snugly. When it comes to maintenance, remember to replace the filter once a year. This will keep your vacuum cleaner working at its best. Also, always buy from reliable sources like us to ensure you get a genuine and high - quality filter.