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 shatter-proof. Ideal for installation indoors and outdoors and under extreme conditions. High resistance to vegetable and animal fats, mineral oil, diesel, weak acids, weak and strong alkalis and alcohol. Permanently elastic, self-sealing, lateral puncture membranes in combination with integrated thread make both direct cable installation through the membrane and the use of cable glands without a lock nut possible. Captive quick-release cover screws close the box with just a quarter turn. There are permanently elastic, self-sealing puncture membranes on the sides and in the base for tool-free cable entry.