CorruBracket can be used to mount almost anything to corrugated metal roofing and is compatible with 7/8″ and 3/4″ corrugated roofing. Each comes with factory-applied butyl sealant already in the base, and the S-5!® patented reservoir conceals the sealant from UV exposure, preventing drying and cracks. The CorruBracket is pre-drilled and threaded w/ two 8mm holes on top for mounting everything from Solar/PV Kits to Snow Retention systems like ColorGard. Each CorruBracket comes with factory-applied butyl sealant in the base. CorruBracket is compatible with most common metal roofing materials. Strong enough for heavy-duty applications, the CorruBracket is the perfect match for S-5!® ColorGard snow retention system, and the easy installation makes it the best solution for installing photovoltaic solar arrays to corrugated roofing with the S-5-PV Kit. The CorruBracket has been tested for load-to-failure results on wood decking, metal and wood purlins. The independent lab test data found at www.S-5.com can be used for load-critical designs and applications. S-5!® holding strength is unmatched in the industry. Due to the various applications, CorruBracket does not come with screws.