COMBI damp room cable junction box made of flame-retardant, halogen-free, glass fiber reinforced polypropylene, in 2-component plastic technology combined with puncture membranes made of thermoplastic elastomer. The box with a high protection class is weather and UV resistant, as well as impact-resistant and shatterproof. Ideal for extreme use or installation indoors and outdoors. High resistance to vegetable and animal fats, mineral oil, diesel, weak acids, weak and strong alkalis and alcohol. There are permanently elastic, self-sealing puncture membranes on the sides and in the base for tool-free cable entry.