Trina Solar's DUOMAX, is a UL/IEC certified frameless module that needs no grounding. DUOMAX comprises two layers of 2.5mm heat-strengthened glass. By replacing the plastic backsheet with heat-strengthened glass, DUOMAX provides UL Fire Class A safety and reduces micro-cracking, PID, module warping, UV aging, and corrosion from sand, acid, alkali, and salt mist.

The DUOMAX module was designed to pass the highest UL fire resistance certification. The double-glass module design offers not only higher reliability and longer durability, but also significant Balance of System cost savings by eliminating the aluminum frame of conventional modules and frame-grounding requirements. The application of double-glass modules covers multiple markets including utility, residential and commercial.

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