Sta-Rite Max-E-Therm 400 Pool & Spa Heater Control Board Membrane Panel. Have a few of these. The item "Sta-Rite Max-E-Therm 400 Pool Spa Heater Control Board Enclosure Membrane Panel" is in sale since Friday, July 30, 2021.This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Pool Equipment & Parts\Pool Equipment Parts". The seller is "jmsuncoasttreasures" and is located in Brooksville, Florida. This item can be shipped to United States.