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 Drawer Frozen Food Container Clear Basket KGE KGV KKE
Bosch KIV34 Top or Middle Freezer Drawer Frozen Food Container GID14 GID18 KIV32
Bosch Fridge & Freezer Frozen Food Container Drawer Genuine
Bosch KIV28V Fridge Freezer Middle Drawer Frozen Food Storage Container KIV38V