The Municipal Undertaking for Educational Buildings and Property shall enter into a framework agreement for ventilation installation works The framework agreement will include service for ventilation systems, function control for kitchen flues, maintenance of ventilation systems and renovation or installation of new ventilation systems. Tenders shall be submitted for all three lots, and the tenderer shall give prices for all schools in all school groups in the zones. Framework agreements will be entered into with 4 to 6 tenderers.