Airflow DV110SE Ventilation Unit filter 2 x G4 and 1 x F7 vent-axia-filters-cat-56 This is the 'TW' model

This is the 'TW' model which is a single speed fan operated via a light switch or pull cord and has an integral overrun timer

A fan which has been designed to be totally flexible and multi functional

suitable for external wall thicknesses of 140mm and above and can be installed in internal wall constructions of between 100 - 150mm

a on constant)

Pull Cord with Timer Mod

Airflow DV110SE Ventilation Unit filter 2 x G4 and 1 x F7 vent-axia-filters-cat-56 This is the 'TW' modelAirflow DV110SE filter 2 x G4 and 1 x F7 G4 filters are of courser grade and designed to prevent insects, leaves and other small debris from entering the home. F7 Filters are fine grade and designed to capture small and often invisible particles such as pollen spore, bacterium and dust.