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Envirofan introduces new sub-floor ventilation system

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article image EF10-4 sub-floor ventilation system
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Envirofan  sub-floor ventilation systems have been tested and approved by unisearch since the 1970’s. The Envirofan EF10-4 sub-floor ventilation system is suitable for ventilating sub-floor areas.

The installation of the EF10-4 sub-floor ventilation system is done by the removal of a terracotta vent or by physically extracting 2 bricks with a diamond blade; the minimum cut out size is 234 x 175. The extraction rate of damp air/minute is 5,500 litres per minute.

The damp air is extracted directly from the sub-floor area using wall mounted fans at 27dba. It is operated by a 12 volt power supply. Colours available are white or brown.

For dead and hard to reach areas to be ventilated may be deemed stagnant. The EF10-4 is split from its grill by the removal of four screws. The grill is placed on the external wall of the house.

The quad fan system is installed into its adaptor as shown which will adapt to 150mm flexi duct or 150mm PVC pipe. This has extraction rate of damp air/minute is 5,500 litres per minute, at 27dba. It is operated by a 12 volt power supply. External grill colour availability is white or brown.

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