... ServiceLifetime technical support and accessories supply. 1, Heating by gas,diesel or electric 2, 12,16,32,64 trays optional ... rubber; 4,Double layers glasses easy clean;5, "Olympia" (Japan) burner are durable ,powerful,and energy saving;6, Interior and exterior ... all stainless steal easy clean;7, Three vertical and adjustable louvers , even baking;8, Adjustable door rubber ...