E means that the product is rated in its category in terms of energy efficiency. The Energy Labeling system is based on EU Regulation 2017/1369/EU. E Bosch Serie 4 GSN33CWEV, 225 L, 20 kg/24h, SN-T, No Frost system, E, White Bosch Serie 4 GSN33CWEV. Freezer net capacity: 225 L, Climate class: SN-T, Freezing capacity: 20 kg/24h, Storage time during power failure: 25 h, Noise level: 39 dB, Star rating: 4*, No Frost system. Door hinge: Right. Energy efficiency class: E, Annual energy consumption: 229 kWh. Product color: White