Using this cartridge filter is easy. First, make sure your vacuum is turned off and unplugged. Then, find the filter compartment in your wet and dry canister vacuum. Remove the old filter and place this new ShopVac cartridge filter in its place. Ensure it fits snugly. When using your vacuum, avoid sucking up large or sharp objects as they may damage the filter. For maintenance, regularly check the filter for dirt and debris. If it looks dirty, you can gently tap it to remove the loose particles. If it's very dirty, you may need to replace it. We've been in the appliance parts business for over 25 years, so you can trust this filter to work well for your vacuum.