• quad
  • EFQuadFan-Back
  • env-low-voltage-cable
  • env-transformer
  • EFQuadFan-FrontWhite
  • EF10-4SG-FRONT
  • EFQuadFan-Front
  • EFTerracotta-Front

Envirofan Quad Fan Kit (EF10-4-K)


This fan-forced sub-floor vent chassis fits into a space of two (2) bricks high, by one (1) brick wide. With a 20mm flange that is integrated into the louvered model, and fits snuggly into the hole. The Envirofan Quad Fan extracts 6,500 litres per minute (6.5m3/min@7.5v) of damp air, and is the quietest system in its class. Cost to run is low at only $7 annually. The Envirofan Quad Fan is available also in white or heritage style, and is packaged with the Envirofan Quad Fan system, transformer and 6m of low voltage cable. This system is ideal for applications where a standard passive terracotta brick vent is to be replaced.

NB- The transformer that comes supplied does have a voltage selector on it which can be adjsuted by a small screwdriver. We recommend any voltage from 7.5v depending on your preference between rpm’s and db ratio’s.



SKU: EF10-4-k Category:


  • Size: l-240mm x w-180mm x d-80mm.
  • Terracotta vent:
    OD (outside dimension with integrated flange) l-275mm x b-215mm x d-65mm.
    Cut out size l-235mm x b-175mm.
  • White, shale grey and brown powder coated aluminium louvered vent or mill finish cast aluminium in heritage design.
  • 6.5m3 (6,500 litres/min) @ 7.5volts from your sub floor area
  • 7.5m3 (7,500 litres/min) from your sub floor @ 12volts
  • Quiet operation at only 30db@1m at 7.5v
  • Long life – fully serviceable.
  • An unobtrusive design that is aesthetically pleasing and will not detract from your home.
  • Retrofits a 2 brick high terra-cotta vent.
  • White & Shale Grey Contemporary and Heritage (Mill finish) grill available (as shown below).
  • Low voltage (12v – 13.2v) or solar powered.
  • Australian made.
  • 2 years manufacturers warranty.
  • Digital timer is recommended.


At the problem area where the musty smell is most pronounced inside the dwelling which can be verified by going into the sub -floor area to determine that the smell is more concentrated in this area. Where discolouration (darkened appearance or fungi) on the soil is apparent as compared to other soil appearance in the sub-floor area. In the area where there is reduced clearance of 180mm between the bottom edge of the floor joist and the top edge of the brick work where the Envirofan sits on. Placed in strategic location as aforementioned where double brick size terracotta vents exist.
Install EF5MA (single brick motor assembly in sub-walls (without the grill) in solid brick dwellings to transfer air from one section to the next (no ducting) toward an Envirofan sub-floor ventilation system on the outside wall.

Additional information


White, Shale Grey, Brown, Heritage

© 2016 Envirofan Sub-Floor Ventilation Solutions, Sydney – Reduce Mould & Prevent Termites.
*Conditions may apply. All Rights Reserved. This material is subject to copyright. No reproduction, copying, altering or transmission of the above information is permitted without the prior written consent of the copyright owner.
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 & the United Kingdom (UK).