The K+ LPG Triple Deck Gas Steamer is constructed from the highest quality AISI 304 grade stainless steel. The appliance is made to last, even in the roughest conditions. The energy-efficient heat exchange system, including the insulated heat exchange chamber, allows for even and efficient cooking. The three-stop rotary door lock system, overheat tank protector device, and tank auto refill and pressure release valve make this perfect for steaming in a busy kitchen. The K+ Triple Deck Steamer comes with an 18-month warranty.