Vertex IsoTwist Complete Annual Maintenance Kit

Everything You Need for Annual IsoTwist Maintenance — In One Kit Stop chasing parts every year. This bundle gives you every filter and the membrane your Vertex IsoTwist system needs to stay efficient and reliable. It’s designed for busy homeowners and facility managers who want consistent water quality without missed maintenance. Replace everything at once and keep your system working at peak performance. Why it matters: Old filters and membranes reduce flow, affect taste, and strain your system. This bundle keeps water quality steady and helps extend system life. What's Included Vertex IsoTwist Annual RO Replacement Filter Kit choice of: 4-Stage FK-112 – 3 filters or 5-Stage FK-113 – 4 filters model Vertex Replacement RO Membrane (MHA-4222) Why Bundle? Complete your annual maintenance in one order Ensure all filters and membrane are replaced at the same time for optimal water quality Never forget the membrane — the most commonly overlooked maintenance item Recommended Replacement Schedule Vertex recommends replacing all filters and the RO membrane annually for best performance. This kit makes it easy to stay on schedule and maintain the water quality your family deserves. Choose your filter stage model below. Compatible with the Vertex IsoTwist Reverse Osmosis system.