Improve Air Quality: Facing various everyday indoor air impurities, our HEPA cartridge works with your device to help improve the quality of your indoor air 3 Layer Screen: Our element cartridge features a 3-layer screen system that captures airborne particles of various sizes. Working with your device, it helps clean impurities from the air and brings you a fresh and clean breathing experience Standard Size: 16x19x2.2 inch / 40.4x48.3x5.5 cm. Precisely engineered to fit most mainstream units, ensuring easy, snag-free installation. Universal compatibility delivers reliable sizing for a wide range of filtration needs Easy Installation: Tool-free, hands-only setup completed in under 5 minutes. Anti-slip textured edges ensure a secure fit without shifting, making installation quick, stable, and hassle-free Universal Fit: Compatible with VEVOR air purifiers and most other major brands. Just insert into your air purifier system for effective, whole-room filtration. Helps create a cleaner indoor condition so you can enjoy fresher, more breathable air