IntroduceBallasted Roof Mounting System is a highly engineered solution that secures the array without damaging the flat roof. It is compatible with the usual framed modules and typically does not require roof penetrations.Made of lightweight and strong aluminum construction,Website:http://www.wanhossolar.com, the ballasted solution components are pre-assembled and pre-cut to prevent corrosion and save your installation time and labor cost.Technical informationInstall SiteLow profile roof and open fieldTilt Angle5, 10, 15 and 20 degreesBuilding HeightUp to 20 meterMax Wind SpeedUp to 60 m/sSnow LoadUp to 1.4KN/m2StandardsAS/NZS 1170 & TUV & OthersMaterialAluminum Alloy & Stainless SteelColorNaturalAnti-corrosiveAnodizedWarranty10 years warrantyDurationMore than 20 yearsBenefits1.Non-Penetrating to rafters2.Easy installation. The parts would be pre-assembled on factory to save your install time on site.3.Rail-less.4.Light, sturdy material for a cost-efficient system.