MELMAT offers these "Easy Order" cases to fit most of your heavy duty case needs with lightning fast delivery time. These cases are formed of Ultra light Modular Weight Polyethylene, resistant to oils., fuels, solvents and acids. These cases can also withstand temperatures ranging from -80 degrees fahrenhiet to +185 degrees fahrenhiet. These cases have the strength to absorb tremendous impact without cracking or permanently denting. In addition, all the parallel rib and no-rib cases are fitted with corrosion resistant hardware and heavy duty aluminum valances. You can always design your own case. A custom case can be made for any specific product or purpose. Contact us at MELMAT with any questions.