Pure Water for Whole House 2 Stage Geekpure Whole House Water Filter System is installed at the main water supply and produce pure water for your entire home. Enjoy better water from every tap and every appliance in the whole house. Flow rate:5-15 GPM (depend on feed water pressure.) PP Sediment Filter PP Sediment is used to remove silt, sand, rust, dirt, and other undissolved particles,The PP filter display different color and tracks the life time as you use,It is time to replace a new one when it is dark yellow or brown. Life time:6-12 months or 100 K gallons (Depends on Usage Amount and Feed Water Quality) . Carbon block filter Carbon block filter is used to remove chlorine, taste & odors,rust and very fine particulates. Life time:6-12 months or 100 K gallons (Depends on Usage Amount and Feed Water Quality) . Flow rate:5-15 GPM (depend on feed water pressure.) Specification: Maximum Pressure: 90 psi (6.2 bar) , Temperature:40-110°F/5-45°C , Shelf life: 5 Years. Note: 1. Please lubricate the o-ring with silicon grease and use wrench provided to prevent leakage. you may search «whole house water filter » on YouTube, there is installation video , it is very helpful if it is the first time to install it. 2. Protect filter housing from freezing. 3. This filter housing has a maximum operating pressure rating of 90 psi, if you suspect that your water pressure will at any time exceed 80 psi, a pressure regulator MUST BE INSTALLED before the filter housing. this action will guard against the water pressure exceeding the maximum pressure rating.it is recommended that the pressure regulator be set at 60 psi or less. 4. The rubber o-ring provides the water tight seal between the cap and the sump. it is important that the o-ring be properly SEATED IN THE GROOVE of a water leak could occur. More valuable information: 1. What is dimension of the filter housings and filter cartridges ? ANSWER: It is standard sized 4.5″ OD x 20″ height . 2. What is in the box? ANSWER: 2 x 20 inch blue housing with pressure release , 2 x plastic wrench ,2 x metal bracket.2 bags screws,1 x PP sediment filter, 1 x carbon block filter. 3.What is filters options? ANSWER: 1.PP spun filter, Reduce sand, dirt, sediment. life time:6 months. 2.Carbon block filter, Further reduce chlorine, taste & odors, very fine particulates. life time:6 months. 3.PP string wound spun filter, Reduce sand, dirt, sediment. life time:6 months. 4.PP pleated spun filter, Reduce sand, dirt, sediment. life time:6 months. 5.2 x PP and 2 x carbon filters, life time:6 months. PS.The Life Time of the Filter Cartridge Depends on Usage Amount and Feed Water Quality.