The UNIRAC SHBUTYLM2 Stronghold Butyl Attachment Kit is a reliable and watertight roof mounting solution designed for use with the NXT UMOUNT™ and Stronghold™ attachment systems. This kit features a factory-applied butyl seal that eliminates the need for separate flashing, ensuring a quick, clean, and durable installation. Made from mill-finish aluminum, it delivers excellent strength and corrosion resistance for long-term rooftop performance in various climates.