4 1 PRIMR 2.1 GRAY 1G

System 20 High Build Primer Gray Low VOC is direct-to-metal, and offers the functionality as "3 products in 1." Mix 4:1 for a primer filler, 4:1:1 for a primer surfacer or 4:1:2 for a primer sealer. Suitable for both spot repairs and large panels Can be applied directly to bare metal, properly prepared aluminum and galvanized, GRP, SMC, fiberglass, polyester filler, OEM surfaces Excellent build and surface leveling properties Easy to sand wet or dry Compatible with System 20 Low VOC Hardeners