1.5 inch cheap rigid polyethylene sheet factory-HDPE Sheets 1/1.5 inch thick INDUSTRIAL hdpe sheets 4×8-HDPE sheets 4×8 We have a cut-to-size option for customers to buy custom-size HDPE sheets. Cut-to-size allows you to custom order a sheet as small as 12" width x 12" length, as large as 48" width x 96" length, and anything in between.