Culligan SCWH-5 Standard-Duty Whole House Water Filter Replacement Cartridges, 2-Pack, Black The SCWH-5 Whole House Water Filter for reduction of sediment, rust, scale, dirt, and sand that helps protect you appliances and keeps your faucest flowing freely. Features The SCWH-5 carbon wrapped standard duty filtration cartridge works in HF-150A, HF-160, HF-360A, and HF-365 whole house filtration systems Perfect for residential homes, helps protect appliances and pluming from sediment and scale Features a flow rate of 4 GPM and filter life of 3 months/15,000 gallons (depending on usage and water conditions) Reduces: sediment, rust, scale, dirt and sand The HF-150A is tested and certified by WQA against NSF/ANSI Standard 42 for materials safety and structural integrity only Micron rating of 5 (the smaller the micron rating, the smaller size patricle the cartridge will filter) Compatible with Culligan model HF-150A, HF-160, HF-360A, and HF-365 USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.