Product review (1 stars): Not recommend to buy this
I ordered this filer monthly before and tried to install it to replace my old one. It didn't work. Not water can pass through it. I thought there are things I did not install it correctly and tried many times and there is no way to make it work. By the way, I am an Engineer. Moreover, the product I received looks very much a old one with sign of use and dirt around it. I should return it when I had the chance. Not recommend to buy this.