NSF; MET to UL and CSA Standards / listed by UNOX S.r.l.. Advanced airflow design with patented baffle for even baking. Heat settings from 175-500 deg F. 60 minute timer or continuous on. Buzzer goes off at end of cycle. No Humidity. Extra large motor and high temperature bearings, for long lasting use. Heavy duty stainless steel construction. Heavy duty door and hinge construction. Safety design: cool-touch double wall glass door. Energy efficient with high R value insulation. 2 1/2 inch between shelves. Chef Support on-line and via phone. 2 Year Limited Carry-in Warranty