Leak and Corrosion Proof Insulated Boxes are mainly designed to keep things stored in hot or cold condition for longer period of time. These Boxes are insulated with rigid polyurethane foam having K value of 0.016 K cal/mhr. These Insulated Boxes are made from polyethylene material to ensure long lasting usage. Leak and Corrosion Proof Insulated Boxes are offered in double wall construction and have built-in space to print message logo and brand name.