The invention relates to a device for casting a molten metal, said device comprising casting rolls (2, 3) and a housing (9) arranged downstream from the same for the cast strip. The aim of the invention is to be able to replace the casting rolls with minimum mounting means, and to simultaneously reduce the thermal load of the casting rolls (2, 3) and the adjacent units. In order to achieve this, the inventive device is provided with a casting roll screen (10) which forms a displaceable structural unit with a frame (25) used to support the casting rolls (2, 3).