New sundance spasmart heater assembly for 2000+ spas. This heater is the replacement for all 2006+ sundance 880 and 2005 sundance 880/850 60 hz models. May also be used for all 2000-2004 sundance 850 / portofino models. This also replaces the bypass heater on many sundance spa models. Sundance part number: 6500-310. Over 25 years of technical experience in the spa industry.The item “Spa Control / Sundance Spa Smart Heater 6500-310″ is in sale since Sunday, April 12, 2015. This item is in the category “Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Spas & Hot Tubs”. The seller is “a-1spacontrol” and is located in Riverside, California. This item can be shipped to United States.