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 Haier HTF-540DP7, 528 L, ST, 12 kg/24h, F, Fresh zone compartment, Platinum, Stainless steel Haier HTF-540DP7. Total net capacity: 528 L. Display type: LED. Climate class: ST, Noise level: 37 dB. Fridge net capacity: 354 L, No Frost (fridge), Multi-Airflow system (fridge), Fridge interior light. Freezer net capacity: 174 L, Freezing capacity: 12 kg/24h, No Frost (freezer). Fresh zone compartment. Energy efficiency class: F, Annual energy consumption: 360 kWh. Product color: Platinum, Stainless steel