U-POL® SYSTEM 20 UP2305 National Rule Fast Hardener

U-POL System 20 Fast Hardener accelerates cure time for U-POL primers, clears, and topcoats. This 2.5-liter hardener is formulated for efficient single-panel repairs, delivering quick setup without sacrificing finish quality. Mix with U-POL products according to specifications for faster turnaround on autobody work.