The CrossRail Tilt Up mounting system for photovoltaic assemblies is suitable for nearly all roof types including flat, low slope and steep slope. This includes comp shingle, tile and standing seam roofs. Pre-engineered for 7, 10 and 15 degree tilt. High flexibility for the degree of tilt. UL 2703 Listed for bonding - allows one lug per module row (mill only), eliminating cost and labor.