Lee and Erwin,
I have the same type of filter as John and it does my whole house. The vessel is 44" tall and 8" in diameter and has a programmable head that backwashes the filter when you want. I have mine set for 3 times a week. So far it has been almost two years and I still can not get a chlorine reading, either total or free from it. They also switched my water to chloramines and not a problem for me.
The sell them on ebay but I got mine from a local water conditioning company. With 1 cubic foot of carbon and installation it ran around ~$500.I'll get you a picture in a bit.