High Efficient Filtration: The HEPA filter can effectively capture airborne particles as small as 0.3 microns with a high efficiency of 99.97%, including allergen, pathogens, etc.. Purify the Air: HEPA filters provide a powerful defense against these harmful substances by effectively capturing fine particles and pollutants that can negatively impact health. High efficiency HEPA filters make up the core of any three-stage filtration unit. Quantity: 5pcs. Size: 15.75'' x 15.75'' x 0.75'' / 40 x 40 x 1.9 cm. The entire properly sealed filter will not leak while allowing cleaner air to flow through. Easy to Install: Set up filters to create an efficient 3-stage filtration system that allows for regular maintenance and ensures optimal performance of the filtration system. Perfect Fit: Compatible for VEVOR air scrubber, as well as other brands. By integrating HEPA filters into an air scrubber system, you achieve a comprehensive and thorough purification of the air, ensuring a healthier and cleaner indoor environment.