None 6 in. x 12 in. Bearskin Joint Flashing

6 in. x 12 in. Bearskin Joint Flashing is a plastic sheet for use as a joint flashing behind every butt joint in the siding. The product is a proprietary plastic, 20-year UV-rated sheet 4 ml thick that is basically a six by twelve post-it note. The easy to use joint flashing sheet that will change the way siding is installed.