thin hdpe plate 12mm manufacture-HDPE black panel for sale. 15mm hdpe panel Manufacturer-HDPE 4×8 polyethylene sheet for sale We manufacture HDPE/Recycled Plastic sheets of all different lours and textures. You can purchase a variety HDPE sheets from us here. Extra Information. Dimensions: 1/2 Sheet – 1220 x 1220 x 12.7mm, 1/2 Sheet – 1220