The perforated trays are made of 304 stainless steel. Generally the perforated tray is used in food dehydrated ovens. But the tray is also can be matched with freezing machine and steam machine. The tray can load max 20kg. The mesh size can be 3*3mm,5*5mm and 8*8mm. Besides, the dimension and the thickness of perforated trays can be customized as client' needs.