The model number is normally found inside the fridge or freezer. You will likely need to remove the salad drawer or freezer drawer to find the model number plate. Otherwise the model number is likely to be on the side or rear of the appliance.
Bosch CLASSIXX Freezer Drawer Frozen Food Container (check fits list below)
Bosch KGV31420GB Fridge Freezer Top / Middle Drawer Frozen Food Container
Bosch Fridge & Freezer Frozen Food Container Drawer Genuine
Bosch Built In Freezer Drawer Frozen Food Container Genuine For GUD15A50GB/03
Bosch GUD15A40GB/01 Drawer Frozen Food Container Fridge & Freezer Genuine
Bosch KIV32X23GB Fridge Freezer Drawer Frozen Food Container GENUINE