The size of the barbecue box is generally 30.5cm- 27.3cm- 2 1cm. According to the query from the home grid, the domestic oven meets the specification of the general oven design standard 2020. The standard stipulates that the size, length, width and height of the barbecue box are generally 30.5cm- 27.3cm- 2 1cm. In this way, the safety factor of unpacking within the specified size is the highest.