These SolarWorld PV Modules are designed for use in high-voltage grid-tie applications as well as large industrial off-grid applications for 24- or 48- volt battery charging. These modules use 72 five-inch semi-square single crystalline cells in series behind tempered glass. They feature clear-anodized aluminum frames and a sealed junction box with bypass diodes and Multi-Contact locking connector output cables. The Sunmodule is certified to the stringent safety and design requirements of UL1703 and IEC 61215. All US Sunmodules are currently produced in the ISO 9001-2000 certified Camarillo, California facility. SolarWorld offers end-of-life module recycling for all Sunmodules. 10-year 90% power warranty, 25-year 80% power warranty. UL listed, CEC approved. ASK ABOUT OUR VOLUME DISCOUNTS!!!