I designed and installed this system myself. I used sealed and painted, glued and lagged pressure treated lumber for the frames. My system has 6- 200 W Evergreen panels, Midnite E-Panel, Magnum 4024 inverter sine inverter, and Midnite Classic charge controller. The batteries are 1135 AHrs. of Bulldog forklift batteries, equipped with BFS central degassing and watering caps. Richard Washburn Maine