HDPE (High Density Polyethylene) Plastic Sheet 1/2″ x 6″ x 12″ White, natural smooth, raw cut. High density polyethylene (HDPE) is a cost effective material for both indoor and outdoor applications and used by many industries including, marine, medical, food processing, nuclear, agriculture, sign, and manufacturing. High Density Polyethylene (HDPE) is harder than low density polyethylene and has higher tensile strength, with better compressive strength. HDPE has good insulation properties, is easy to weld, and, is useful for outdoor applications, including plywood replacement. The operating temperatures are from -58 °F to +194 °F. It is easily fabricated with standard woodworking tools and environmentally and UV stabilized to last in the harsh marine environment.