Have some extra filters on hand, you can replace a clean set for your at once. Fully fit for GAS18V-LI GAS 14.4v LI Vacuum Cleaner Build in right size, these filters are easy to replace when your old filter get dirty These filters can capture particles as small as 0.3 Micro-ns and contaminant in the air, providing healthier air. High-quality filter maintain the of your vacuum while reducing Micro--particles and other in the air, offering fresher air.