RexRack provides solar professionals with an incredibly strong, versatile, and modular residential and commercial racking solution. RexRack incorporates telescoping front and rear legs to accommodate uneven roof surfaces and to provide a range of slope adjustments for the array. RexRack is constructed from corrosion-resistant anodized 6063-T6 structural aluminum. All fasteners are stainless steel. RexRack is differentiated from traditional mounting systems by eliminating lateral runners on the roof surface. RexRack runners are fabricated from 6063-T6 aluminum and are located directly under the solar collectors. By relocating the runners to the backside of the collectors, a reinforced lattice is created between the two strut runners and the collectors that are clamped to them. The array itself becomes a single unified rigid body, much like unibody construction in newer automobiles. When the array itself is rigid, the rear legs need only carry the vertical load of the array, eliminating the cross bracing required for lateral loads in conventional racking systems. RexRack is the clear racking choice in areas that are prone to high wind loads.