The CertainTeed 320 watt monocrystalline solar panel is the best in terms of high power output and long-term reliability at an attractive low price. This all black solar panel is made up of 120 half-cell monocrystalline cells on a black backsheet with a black anodized aluminum frame. Certified for challenging environmental conditions, the CertainTeed module withstands 5400 Pa snow load and 2400 Pa wind load.The CertainTeed CT solar panel operates at 19.0% efficiency to maximize the light absorption area. This CertainTeed module delivers efficiency and reliability that make it ideal for utility grid-tied residential installations. Make your own power at home with this low priced solar panel. UL Certified, CEC approved, and backed by a 10-year product warranty plus a 25-year power output warranty gives peace of mind. Min Order pallet of 10 modules.