Spelsberg IP66 Polystyrene Enclosures – Spelsberg 110-408, This IP66 rated, grey (RAL7035) polystyrene enclosure from Spelsberg measures 254 x 180 x 90mm and is designed to insulate and protect electronic components from dust, water and corrosion. Spelsberg 110-408 254 x 180 x 90 Polystyrene Enclosure