1-Year Water Filtration Replacement Pack: This pack contains individually wrapped high-capacity filter replacement cartridges designed for 6-stage RO water filtration systems RCC7U and RCC1UP, providing a full year of filtration. The pack includes 8 filters: 2x sediment filters, 2x granular activated carbon filters, 2x carbon block filters, 1x post-carbon filter, and 1x ultraviolet light bulb. Universal Compatibility: iSpring water filter cartridge set fits standard housings that require 10” x 2.5” reverse osmosis water filter cartridges. Specifically designed to fit iSpring Reverse Osmosis systems with UV, ensuring seamless integration and reliable filtration. Long-Lasting UV Protection: The included UV lamp lasts up to 8,000 hours and operates at a flow rate of 1.0 GPM, effectively purifying your water. Perfect for under sink and RO water filter systems. Maintained Freshness: Each filter is individually wrapped to ensure optimal freshness and performance upon installation. Please Note: This water filter replacement cartridge pack does NOT include an RO membrane. Updated FT15 post-carbon filters are built with a secure push-fit quick connection, which allows faster filter replacement. If you have trouble installing the filters, please refer to the user manual or contact us.