Filter Fits Rocket HV300 and HV310 Series.Part # XFFV300 & 1080FTV320.It is washable, reusable.We suggest you change your filters every 3 to 6 months for optimal performance of your Shark vacuum.This is not a Shark OEM product and is not covered under any Shark manufacturer's warranty.The Shark brand names and logos are the registered trademarks of their respective owners.Any use of the Shark brand name or model designation for this product is made solely for purposes of demonstrating compatibility.