National Ventilation D3645 Nat Vent 100mm Pvc Flexible Ducting X

National Ventilation Monsoon Flexible Ducting is ideal for extractor fan installations suitable for domestic and commercial use fits to 100mm (4") extractor fans and accessories. It is suitable for domestic and commercial use. • Ideal for extractor fan installations • Suitable for domestic and commercial use • Quick and easy to install • Fits to 100mm (4") extractor fans and accessories • Complies with building regulations