Reflections from shades are drawn over a logarithmic spiral . Shades corresponds in a relationship of 3:2:1. Each shade evenly decreases the amount of light. The only metal pendant available today is model 4/3. Only EU-version (220V) available.
As we are based in Sweden, all our lamps/electrical items are made to the European standard of 230 Volts, and come with an EU plug. You may need an adapter for your product to function properly.