Quick view Sundance Spas Heater, LowFlow, Sundance Repl, 13" x 3-1/2",230v,5.5kW,Gen Sundance SpasVertical heater assembly 3-1/2" x 13" with 3/4" barb x 3/4" 90&deg barb inlet/outlets. Rated at 5.5kW/230v. Purchase of a foam wrap jacket is recommended when purchasing manifold. Add to Wishlist