Envirofan Double Brick Dual Fan Brown Kit (EF10BK)


The Envirofan Dual Fan sub-floor system extracts 2,750 litres per minute (2.75m3/min) of damp air. It is available in two profiles: single brick size and terracotta vent size (two (2) bricks high by one (1) brick wide). This fan-forced vent operates at around only $3 annually, and is available in brown, white, or heritage style. Packaged with a transformer and 6m of low voltage cable, the Envirofan Dual Fan retrofits a double brick height size tc (terra-cotta) vents and will fit in a 180mm space between the top of the brick edge where the Envirofan fits to the underneath side edge of the timber joist. If the clearance is less than this the (single brick) is ideal for applications where the sub-floor area is reduced and our popular Quad Fan system cannot be fitted. If accessibility is an issue, the low voltage cabling can be installed via conduit below ground level and from a weatherproof box containing the timer and transformer. Or wired in parallel through the brick cavity.

In stock

SKU: EF10BK Category:


  • Convenient brick size; OD (outside dimension with integrated flange) l-275mm x w-215mm x d-65mm. Cut out size l-235mm x w-175mm.
  • Brown or White powder coated aluminium louvered vent.
  • 2.75m3 (2,750 litres) of damp air extracted from your sub-floor per minute.
  • Quiet operation at only 27db@1m.
  • Long life – fully serviceable.
  • An unobtrusive design that is aesthetically pleasing and will not detract from your home.
  • Heritage grill available.
  • Low voltage (12v) or solar powered.
  • 100% Australian made.
  • 2 years manufacturers warranty


At the problem area where the musty smell is most pronounced inside the dwelling. This can be verified by going into the sub-floor area to determine that the musty smell is more concentrated. Where discolouration (darkened appearance or fungi) on the soil is apparent as compared to other soil appearance in the sub-floor area. Where the distance between the underneath side of the joist to the top brick edge where the Envirofan sits on is 180mm. Where there is no sub-floor access, coupled with the solar option or external power point (or internal power point mounted on the inside skin of a perimeter wall) total installation can be completed from the outside.

Install EF5MA (single brick motor assemblyl in sub-walls (without the louvered grill) in solid brick dwellings to transfer air from one section to the next (no ducting) toward the Envirofan system on the external wall.

Where the distance of the ground level outside the dwelling, is in close proximity or at floor level (then go to a single brick size fan).

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Envirofan sub-floor ventilation systems are available in Melbourne, Gippsland, Adelaide, Perth, Brisbane, Gold Coast, Lismore, Mullumbimby, Northern Rivers, Coffs Harbour, Mid-North Coast, Port Macquarie, Taree, Hunter, Newcastle, Central Coast, Sydney, Illawarra, Wollongong, Shoalhaven, Eurobodalla, Southern Highlands, Canberra, Central West, Bathurst & Orange.