Enjoy clean, clear, and iron-free water at every faucet. APEC Water 3-stage 20 in. Big Blue (BB) whole house water purification system can effectively remove sediment, chemicals, and iron to deliver cleaner, more manageable water for all your water needs. Ideal for whole house filtration, light commercial or industrial applications with a fast flow rate. The high-capacity sediment filter is made of durable, polyester and has a pleated design to maximize dirt-holding capacity. The iron filter utilizes high purity manganese dioxide to effectively reduce iron, iron staining, and the metallic taste in your water by converting soluble ferrous iron into insoluble ferric iron. The carbon filter is a radial flow granular activated carbon (GAC) cartridge that effectively absorbs chlorine, odors, taste, and organic compounds. High-quality housing sets consist of three 20 in. x 4.5 in. industry-standard BB housings. The polypropylene (HFPP) cap has 1 in. FPT inlet and outlet ports for fast-flow rates are pre-attached to a mounting bracket for easy setup and installation. This combo system is a highly versatile and durable water filtration system that will provide you with clean, odorless, and iron-free water throughout all of your water faucets.