Sunbelt  features CPI EON®, a revolutionary wood replacement product, in all our spa enclosures. EON® combines the natural beauty of wood with maintenance free, lifetime enjoyment. EON® is impervious to water, sun and spa chemical degradation, it will not fade, splinter or crack, and because no finishing is required it will always remain maintenance-free. CPI EON® Textured Panels are available in Redwood, Grey CPI and Mahogany.