D 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. D Hisense FT484D4AWLYD, 372 L, 17 kg/24h, SN-T, 40 dB, D, White Hisense FT484D4AWLYD. Freezer net capacity: 372 L, Climate class: SN-T, Freezing capacity: 17 kg/24h, Storage time during power failure: 135 h, Noise level: 40 dB. Lamp type: LED. Energy efficiency class: D, Annual energy consumption: 204 kWh. Product colour: White