The isinlive Core 300 RF filter is a high-quality air purifier cartridge designed to last for 6 months. Made with true HEPA filtration technology and carbon fiber filter media, it effectively captures airborne particles to improve indoor air quality. This pack includes 2 white filters, each featuring a plastic filter frame for easy installation in your air purifier. Ideal for use in the isinlive Core 300 model, this filter helps to keep your home clean and fresh.