F 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. F Samsung RB29FWRNDSA, 320 L, No Frost (fridge), SN-ST, 12 kg/24h, F, Graphite, Metallic Samsung RB29FWRNDSA. Total net capacity: 320 L. Door hinge: Right, Display type: LED. Climate class: SN-ST, Noise level: 37 dB. Fridge net capacity: 212 L, No Frost (fridge), Multi-Airflow system (fridge), Fridge interior light. Freezer net capacity: 108 L, Freezing capacity: 12 kg/24h, No Frost (freezer). Energy efficiency class: F, Annual energy consumption: 311 kWh. Product color: Graphite, Metallic