A means that the product is best rated in its category in terms of energy efficiency. The Energy Labeling system is based on EU Regulation 2017/1369/EU. A Samsung WW11BB504DTW, Front-load, 11 kg, B, 72 dB, 1400 RPM, A Samsung WW11BB504DTW. Loading type: Front-load. Rated capacity: 11 kg, Spin-drying class: B, Noise level (spin): 72 dB, Maximum spin speed: 1400 RPM. Product colour: White. Width: 600 mm, Depth: 600 mm, Height: 850 mm. Energy efficiency class: A