Our RAK products are state-of-the-art water/ration heaters for modern mechanised forces around the world. They consist of: RAK 15, which operates off 15 amps and is designed for installation in tanks and trucks RAK 30 which draws 30 amps to heat faster and is designed for the Marines and Special Forces RAK15/30 units are designed to withstand the rigours of modern conflict and have been comprehensively tested to meet military standard specification MIL-PRF-44466D, including MIL-STD-461: Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment and MIL-STD-810: Environmental Test Methods and Engineering Guidelines. The RAK15 is also certified for food heating, meeting NSF ANSI 4-2013. "An army marches on its stomach" The RAK15/30 is at the optimal size to fit into the cramped quarters of a tank and provide hot meals and drinks for its five person crew, heating 2 pints of water and 5 MRE?s (Meals Ready to Eat) simultaneously. When used for water only, the RAK15/30 can heat up to one gallon of potable water for drinks, washing or medical purposes. Depending on the power rating, the RAK unit does this in just 20 minutes under normal ambient conditions- it does of course work in extreme climates too, but may take longer to heat the contents if the prevailing temperature is bitterly cold. When switched off with the cover closed and locked, the thermally insulated unit keeps its contents piping hot for between four and six hours.