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 RT53K6540SL, 526 L, SN-T, 6 kg/24h, F, Fresh zone compartment, Stainless steel Samsung RT53K6540SL. Total net capacity: 526 L. Door hinge: Right. Climate class: SN-T, Noise level: 41 dB. Fridge net capacity: 401 L, No Frost (fridge), Multi-Airflow system (fridge), Fridge interior light. Freezer net capacity: 125 L, Freezing capacity: 6 kg/24h, No Frost (freezer). Fresh zone compartment. Energy efficiency class: F, Annual energy consumption: 325 kWh. Product colour: Stainless steel