Excalibur"s patented ParallexTM Horizontal Air Flow and HyperwaveTM Fluctuation Technology, the most efficient heat/dry combination on the market * 9-large trays, 15" x 15" each. Mesh screens are BPA free * 26 Hour Timer lets you set it and forget it * Unit automatically turns off when the set time is complete. * Adjustable Thermostat 95◦F to 155◦F