National Ventilation Neutral Monv200br High Rise Through Wall Extractor Fan Duct Installation Kit

National Ventilation F6904T External Ventilation Grille 150 mm/6 Inch Terracotta

National Ventilation F4904BLK External Ventilation Grille 100 mm / 4 Inch (Black)

National Ventilation FXALINS/100 Flexible Insulated Aluminium Fan Ducting - 100mm - Sold by The metre

National Ventilation F5904W External Ventilation Grille Outlet for 125 mm / 5 Inch Duct (White)