The CS6R-400MS-HL HiKu6 all-black module from Canadian Solar is made of black mono PERC cells and comes in an all black design (black frame and black backsheet). This module provides a maximum 400 watts and boasts an impressive 20.5% efficiency under standard testing conditions. Canadian Solar backs the CS6R-400MS-HL with a 25-year product warranty and a 25-year linear performance warranty.