Arcadia has been showing off their Series 4 lighting units for a while now. The series 4 unit is a much needed upgrade from the Series 3 units. The lighting unit is available in wattages ranging from 150, 250 and 400 watt flavors. They use their unique reflector geometry which we hear is key to having efficient T5 lighting. The frame is made out of corrosion resistant aluminum and stainless steel being made available in two colors, silver and black. The pendant models start at around Â£183.69 ($262) and top out with the slimline Series 4 with prices far north of the pendant. These are available in the UK where they are made and some select European countries.