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 LG Series 500 F2X50S9TLB, Front-load, 19.8 lbs (9 kg), B, 71 dB, 1170 RPM, A LG Series 500 F2X50S9TLB. Loading type: Front-load. Drum capacity: 19.8 lbs (9 kg), Spin-drying class: B, Noise level (spin): 71 dB, Noise level (wash): 71 dB, Maximum spin speed: 1170 RPM. Product color: White. Width: 23.6" (600 mm), Depth: 18.7" (475 mm), Height: 33.5" (850 mm). Energy efficiency class: A