1.5 inch custom size rigid polyethylene sheet direct sale 1.5 inch thick INDUSTRIAL hdpe sheets White-HDPE sheets 4×8 . [5 HDPE SHEETS] Dimensions: 1/4 inch thick ± 20 mil × 12 inch wide ± 1/5 inch × 24 inch long ± 1/5 inch ; Easy for cutting, drilling, machining, and welding. Perfect for DIY projects.