Description 1 Standard Size 4.5”x 20” ( 20 Micron) Sediment Filter. Filters sediment particles such as silt, sand, rust, dirt, and other undissolved particles. Melt-blown Polypropylene Sediment Filters. The main function of a sediment filter is to remove large and fine particles from our drinking water, such as sand, dirt, silt, and rust particles. Our Sediment filters are made of fine melted polypropylene, which is then blown and spun in a cylinder-like form. These filters have a lower density at the surface of the filter with progressively higher density toward the center which enables to capture of particles throughout the entire filter depth. This translates to a longer life and allows better performance of all the following filters, such as Carbon Block or GAC filters. 1 Standard Size 4.5”x 20” Block Activated Carbon Filters (5 Micron) – Block Carbon Filters (5 Micron) are similar in their performance to that of granulated GAC filters, being made of fine coconut shell charcoal carbon tightly compressed forming a cylinder block. Solid-block activated charcoal is superior at adsorption because all the water molecules are forced to travel through the compressed charcoal. Also since it is made of packed carbon it helps to trap suspended particles and dirt. 1 Standard Size 4.5”x 20” ( 1 Micron) Sediment Filter. Filters sediment particles such as silt, sand, rust, dirt, and other undissolved particles. 2 replacement Bulb for our 55W Whole House 12 GPM UV Ultraviolet filter Water Filtration Unit. UV lamp: 36" Long, 55W Base: 4 Prong Voltage:110v and 220v UV Lamp Life: 9000 hours (about 1 year) Flow rate: 5-15 GPM (Depend on Feed Water Pressure). Maximum Pressure: 80 psi, SUGGESTED WORK PRESSURE: UNDER 50 PSI, Temperature:40-110°F/5-45°C. Save money and time. Average lifetime 6 months. (depends on water)