• sp4 + hero dual fan kit
  • SP4
  • EFDualFan-Hero
  • EFDualFan-FrontWhite
  • env-low-voltage-cable
  • sp4 + white dual fan kit
  • sp4 + brown dual fan kit
  • sp4 + shale grey dual fan kit
  • sp4 + woodland grey dual fan kit
  • sp4 + heritage dual fan kit

Envirofan Single Brick Dual Fan System with SP4 combination kits (EF5-2-SP4K)


This fan-forced sub-floor vent chassis fits into a space of a single brick . With a 21mm flange that is integrated into the louvered model, fits snuggly into the space that is occupied by a brick or brick size terra-cotta (TC) vent. The solarpanel occupies a space on the roof of 720 x 260. This system does not store energy but works directly when the sun is on the solarpanel which generates power to the quad fan system. The solar concept is ideal where dry air is to be induced into the sub-floor area and when it is damp and rainy it does not activate. A combo kit comprises of 2 x dual fan system (white or brown) 2 x solarpanel (SP4) to operate the each dual fan system and 18m of low voltage cable (LVC) and connectors. 
The Envirofan Dual Fan extracts 3,250 litres per minute (3.25/m3 per min) of damp air, and is the quietest system in its class. Cost to run is free energy from the sun so it leaves no carbon footprint. This system is ideal for applications where a standard brick or passive brick size terracotta vent is to be replaced and ideal for holiday homes whereby the ventilation systems will continue to operate whilst the main power is turned off as it operates off the solar panels. Totally automatic!

SKU: EF5-2-SP4K Category:


  • Brick size vent; OD (outside dimension with integrated flange) l-275mm x w-126mm x d-65mm. Cut out size l-235mm x w-91mm.
  • Solarpanel is 360 x 260 x 25mm @ 1.27 kg’s
  • Available in Brown, White, Shale Grey or Woodland Grey powder coated aluminium louvered vent and also available in a Heritage profile.
  • 3.25m3 (3,250 litres) of damp air extracted from your sub-floor per minute.
  • Reversible fan blades to change modes from negative to positive pressure.
  • Quiet operation at only 30db@1m.
  • Long life – fully serviceable.
  • An unobtrusive design that is aesthetically pleasing and will not detract from your home.
  • Solar powered.
  • Australian made ventilation system.
  • 2 years manufacturers warranty.


The Envirofan should be placed near 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 musty 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 110mm between the bottom edge of the floor joist and the bottom edge of the brick work where the Envirofan sits on. Placed in strategic location as aforementioned where single brick or single brick size terracotta vents is to be extricated.

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, Brown, Shale Grey, Woodland Grey, 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).