Rooftop Solar Panel Roof Mounting Systems Concrete Ballast Short Description: Flat roof mounting system is engineered for the maximum flexibility possible in designing for the commercial and residential solar roof system. It is applicable to large-scale flat roof module installation. The special design also makes the installation easy and fast. Ground Clearance: ≥0.15m Applicable Module: Framed, Frameless Module Orientation: Portrait, Landscape Array Layout: According to the