cdevidal wrote:
Am thinking I may assemble my own under-sink system out of some 5" wall-mounted clear housings and various filters. Need to see what kind and how many.
If under-sink doesn't fit I'll build a small box for sitting on the ground.
I would check the specs on 5" cartridges carefully. Many of them don't have enough gpm and in some cases, putting them in series can reduce the flow further. I would look and see if you can fit 20" housing somewhere. I put 3 of them under our kitchen sink on the back wall and they don't really reduce the usable storage space.
Oh, and if you are using an exterior inline regulator, gift it to someone in need and install a REAL regulator like a Watts 560 series or 263A. These can be mounted outside or inside. The inline "regulators" on have a small orifice in them and at zero or low flow conditions (at night, ex.) the pressure inside your RV will be whatever the CG pressure is. IF the CG pressure goes up too high, it can damage filter cartridges.