Spelsberg IP66 Polystyrene Enclosures – Spelsberg 105 402 01, This IP66 rated, grey (RAL7035) polystyrene enclosure from Spelsberg measures 94 x 65 x 57mm and is designed to insulate and protect electronic components from dust, water and corrosion. Spelsberg 105 402 01 94 x 65 x 57 Polystyrene Enclosure Met K/o