Spelsberg IP66 Polystyrene Enclosures – Spelsberg 110-409, This IP66 rated, grey (RAL7035) polystyrene enclosure from Spelsberg measures 130 x 94 x 57mm and is designed to insulate and protect electronic components from dust, water and corrosion. Spelsberg 110-409 130 x 94 x 57mm Polystyrene Enclosure