The corrugated medium and linerboard board are made of kraft containerboard, a paperboard material usually over 0.01 inches (0.25 mm) thick.
The panels contain cells made in China, Taiwan and, sometimes, Germany. Grape still plans to import inexpensive Chinese-made cells, and to buy Oregon-made inverters -- which convert direct current to alternating current -- for the panels it assembles in Eugene.
The grape solar 400-watt off-grid solar panel kit is ideal for a variety of applications, including rvs, boats, 12 volt battery charging, small pumps, charging small electronic devices and operating led lights.