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 EXXCEL Door Bottle Shelf Tray Rack Lower GENUINE CHECK MODELS LIST 665153
Genuine BOSCH KIR81AFE0G Fridge Freezer Door Lower Bottle Holder Shelf 743239
Genuine Bosch Fridge Door Lower Bottle Shelf Holder 470 x 120 x 100mm KGV33GW30
BOSCH Fridge Door Shelf Bottom Lower Bottle Tray GENUINE see models 11041634
Bosch Fridge & Freezer Bottle Shelf Refrigerator Door Lower Rack Tray KGN367
BEKO Fridge Door Lower Bottle Shelf Bottom Rack 430 x 115 x 90 mm 5928630700