The L-Mount Series are designed for cost-effective, one-bolt installation onto existing composition/asphalt shingle roofs. Quick Mount PV engineered its patented Elevated Water Seal Technology into an integrated L-foot and flashing for super-fast, single-lag bolt installation with unparalleled waterproofing. The L-Mount Series comes with lag bolt or structural screw attachment options for maximum versatility and works with all leading racks. The L-foot can be rotated 360 degrees for optimal adjust-ability and positioning of the rail.