<b >Specification: </b > <br> FEED WATER PRESSURE: 40 - 100 PSI<br> TEMPERATE:40-110°F/5-45°C<br> PH:3.0 -11.0<br> MAX TDS :1000 PPM<br> TURBIDITY < 1.0 NTU<br> MAX SDI <4.0<br> HARDNESS < 5 GPG<br> Shelf life: 3Years<br><br> <b >More valuable information: </b ><br> ✪What is dimension of the Geekpure Replacement Water Filters? <br> It is 4.5"ODx 20" height and standard. <br> ✪What is the function? <br> PP spun filter, Remove sand, dirt, sediment. life time:6-12months. <br> ✪If not Geekpure, the filters is available to other brands whole house water filter? <br> Please don't worry. it compatible to most 20inch standard sized whole house water filter housing <br> ✪What is in the box? <br> 4pcs PP sediment <br><br> <b >Note: </b ><br> 1. The Life Time of the Filter Cartridge Depends on Usage Amount and Feed Water Quality.  <br> 2.The First 2 Tanks of Water Produced Should Be Emptied and Not Used.<br> 3.Push the Tubing All the Way in and Use Teflon Tape During Installation.