C means that the product is rated in its category in terms of energy efficiency. The Energy Labeling system is based on EU Directive 2010/30/EU. C Candy CSTW 539, Freestanding, Top-load, White, 5 kg, 6 h, 600 mm Candy CSTW 539. Appliance placement: Freestanding, Loading type: Top-load, Product colour: White. Rated capacity: 5 kg. Delay start (max): 6 h. Depth: 600 mm, Width: 400 mm, Height: 850 mm. Energy efficiency class (old): C