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 Series 5+ WW90T554DAX, Front-load, 19.8 lbs (9 kg), B, 72 dB, 1400 RPM, A Samsung Series 5+ WW90T554DAX. Loading type: Front-load. Drum capacity: 19.8 lbs (9 kg), Spin-drying class: B, Noise level (spin): 72 dB, Maximum spin speed: 1400 RPM. Product color: Stainless steel. Width: 23.6" (600 mm), Depth: 21.7" (550 mm), Height: 33.5" (850 mm). Energy efficiency class: A