Marine/RV iron filter and softener combo uses portable 2

https://donovanuhwk972.image-perth.org/softpro-iron-filter-system-a-complete-homeowner-s-guide

Marine/RV iron filter and softener combo uses portable 2.5x10 cartridges, polyphosphate, and carbon block; quick-disconnect hose fittings, brass Y-strainer, and onboard TDS meter optimize campground well water for appliances.