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 Candy Smart CST 082DE/1-47, Top-load, 17.6 lbs (8 kg), C, 75 dB, 1000 RPM, F Candy Smart CST 082DE/1-47. Loading type: Top-load. Drum capacity: 17.6 lbs (8 kg), Spin-drying class: C, Noise level (spin): 75 dB, Maximum spin speed: 1000 RPM. Product color: White. Width: 16.1" (410 mm), Depth: 23.6" (600 mm), Height: 33.9" (860 mm). Energy efficiency class: F