Plastic flexible pipe package with components for decentralized supply air via outside air vents and central exhaust air duct for installation in concrete (within the thermally insulated building shell also in riser shafts, hollow walls and double ceilings). The package includes manifolds, exhaust air housings, ventilation grilles or exhaust air valves, the flexible ventilation pipe and an assembly set. Project-related package, the contents of which are defined by ventilation planning. All the necessary material is included. Residential units up to 160 m²
