UNISTRUT CHANEL GALVANIZED STEEL. PVC COATING. US-PC & UP-PC SERIESFor use in corrosive enviroments.PVC coating: 40 mils minimum.Galvanized Steel CAL. 12APPLICATIONS:Are used to create support systems with unistrut straps for conduit pipes.Manufactured in compliance with:UL 5BNEMA RN-1 DOWNLOAD SPEC SHEET