Trays are included,glasses door light inside deck. Extremely well insulated , fast heating, uniform furnace temprature and high thermal efficiency. 1 Stainless steel. 2 The temperature of the surface and bottom of the chambers could be controlled separately, automatic control function. 3 it is easy to clean. 4 Glass window in each deck, checking the baking conditions at any time. 5 best choice for bakery,hotels,cake and pastries