【COMPATIBILITY】 True HEPA filter compatible with Proton Pure Air Purifier for home room, bedroom, office. True HEPA Filter Size: 5.63”x 5.63”x 5.39”【H13 TRUE HEPA FILTER】 Premium H13 grade true HEPA Filter captures 99.97% of airborne particles as small as 0.3 microns in size, removing dust, pollen, smoke, odors and pet dander, effectively improve the air quality for your home.【3-STEP FILTRATION SYSTEM】 H13 true HEPA, fine preliminary filter and activated carbon filters, 3-in-1 high-efficiency filter can reduce particles and smells in your living spaces.【EASY TO INSTALL】 Simply remove the older and dirty filter and replace the new one. For optimum performance, it is recommended to replace the HEPA Filter every 3-6 months.【100% SATISFACTION GUARANTEE】WILERDA is dedicated to 100% customer satisfaction. We care deeply about our customers and our top priority is to make you satisfy our product. If this filter has any problems, please feel free to contact us and we will give you replacement or full refund no-questions-asked! Product Description 2 Pack Premium H13 True HEPA Replacement Filters Compatible with Proton Pure Air Purifier 3-Step Filtration System: H13 true HEPA, fine preliminary filter and activated carbon filters, 3-in-1 high-efficiency filter can reduce particles and smells in your living spaces. Fine Preliminary Filter Removes larger particles in the air like dust, hair, pet fur, lint, and prolongs the life of HEPA filter H13 True HEPA Filter Captures 99.97% of particles as small as 0.3 microns in size, effectively creating fresh and purified air for you and your family. Activated Carbon Filter Absorbs various unwanted household odors from pets, cooking, smoke and VOCs. Ideal for families with pets, cooking and smoking. Track Page Views WithAuctiva's Counter