Case made from impact-resistant polypropylene (PP), extremely stable and stackable, dust proof, waterproof, usable internal dimensions of the empty case: 250 x 175 x 95 mm | Temperature resistant from -30 °C to + 80 °C, automatic pressure balance valve, breathable, whilst remaining water from | Two loops for additional padlocks (diameter 3.5 mm) | outdoor case made of polypropylene