B 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. B LG F4WV5012S0W, Front-load, 12 kg, B, 71 dB, 1360 RPM, B LG F4WV5012S0W. Loading type: Front-load. Rated capacity: 12 kg, Spin-drying class: B, Noise level (spin): 71 dB, Noise level (wash): 53 dB, Maximum spin speed: 1360 RPM. Product colour: White. Width: 600 mm, Depth: 560 mm, Height: 850 mm. Energy efficiency class: B