bella bays copper flashing 20 gauge(0.03"/0.81mm) thickness, 6in x 10ft, astm b152 99.95+% pure copper sheet roll, general use or roofing flashing roll - diy project or contractor is up for auction in Industrial & Scientific. The current bid is $7.55, 91% below the $80.00 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.