Off Grid Solar Panel 90 Watt 12 Volt Using high efficiency 6 Polycrystalline cells. Using low iron tempered glass and EVA film with TPT back sheet to encapsulated cells. Frame: Anodized Aluminum Alloy Type 6063-T5 10 years limited warranty of 90% power output and 25 years limited warranty of 80% power output Dimension of Module: 48.5in x 20.4 in x 1.38 in Weight:17.2 lbs