Light Gray BMP71 Metalized B-302 Label. Metalized Polyester (B-428) labels are designed for applications that utilize barcodes, alphanumeric, graphic symbols and logos and require nameplate-like quality. B-428 is a metalized polyester with a permanent acrylic adhesive and is thermal transfer printable. Matte, light gray finish gives labels a rating and serial plate appearance. Labels are designed to withstand numerous solvents and variable temperatures when applied to various surfaces. RoHS compliant to 2005/618/EC MCV amendment to RoHS Directive 2002/95/EC; UL approved; CSA accepted.