Mantis bs4 l ceiling lamp by bernard schottlander dimensions: d 55 x w 27 x h 145 cm materials: steel, aluminum all our lamps can be wired according to each country. If sold to the usa it will be wired for the usa for instance. Ceiling lamp in steel and aluminum. this piece is attributed to the mentioned designer/maker. It has no attribution mark and no official proof of authenticity, however it is well documented in design history. I take full responsibility for any authenticity issues arising from misattribution, up to 250v (europe/uk standard).