The contracting authority requests tenders for the delivery of asymmetric impulse ventilators for:
— The Larvik tunnel, T9.5, the length of 2 courses is approx. 2.8 km each;
— The Martineås tunnel, south-bound, T12.5, north-bound, T14.75, the length of 2 courses is approx. 1.3 km each.