Top of the line in acrylic sealant formulation and performance technology. Its elastomeric, urethane-modified acrylic resin system insures the strongest adhesion and greatest elongation possible in a waterborne sealant. Meets the performance requirements of ASTM C-920, Grade NS, Class 12.5 and Federal Specification TTS-230, Type II, Class B. Vacuum process and paintable. Cured bead is mildew resistant. Can be used to joints up 3/4". Soap and water clean up.