Cal Spa 1500 Series Replacement Heater. 4.0Kw, 15 Inch, 2 Inch Plumbing, With Pressure Switch, 2 Tail Pieces, And 2 Gaskets. This Is An Upgrade To The Original Heater. It Has A Better Presure Switch And An Upgraded Heater Element. Replaces 58111, 58009 And 58081.
