POLYETHYLENE (HIGH Density HDPE) Matte Black 1/8" Thick (12 5 Pack 12 x 12 x.125 Black HDPE Sheets, Great for DIY Projects for Home and Marine Applications, Black Plastic Sheets, High Density Polyethylene Sheets, Made in USA 4.4 out of 5 stars 561 2 offers from $22.99