Hydor IMF Mixed Flow Inline Fans

R1 750.00R2 770.00

SKU: N/A Category:


Hydor IMF Mixed Flow Inline Fans – a QUALITY brand for residential, commercial  and industrial exhaust or supply air application. Direct connections to standard diameter circular ducting and comes standard with manufacturing.


  • Powerful in-line tubular fan for installation in rigid or flexible ducting.
  • Is designed for the ventilation of homes or similar premises.
  • Easy installation.
  • Silent.
  • Hydor warranty: Products of its manufacture when not misused or neglected to be free of defects in workmanship and/or materials. Our obligation under this warranty is limited to repairing or exchanging F.O.B. factory, any part, assembly or portion found to be defective within one (1) year from the date of commissioning but not to exceed eighteen (18) months from date of shipment from our factory.
  • Does NOT include electrical cord or 3-point plug! (Needs to be wired up by user).

AND ANOTHER THING… When adding an inline duct fan to a fan speed controllerrheostat or dimmer switch, the fan must ALWAYS be set to its HIGHEST speed setting!


  • Two-speed motor.
  • The IMF range of mixed flow inline duct fans comes with a 2-speed selector switch.
  • The motor bearings need no maintenance.

Hydor IMF Mixed Flow Inline Fans extraction rates:

IMF -100 Inline Fan = 225 m3/h
IMF -150 Inline Fan = 490 m3/h
IMF -200 Inline Fan = 900 m3/h

 Hydor IMF Mixed Flow Inline Fans - dimensions 1


Hydor IMF Mixed Flow Inline Fans - dimensions 2


IMF Technical Data
IMF Wiring
How to work out the size and type of fan required:
In order to provide adequate ventilation for a given application, it is essential the
correct size, type and number of units are selected. Selection of the correct fan depends on two
principal factors: the performance and application.
Step 1
Determine which mounting arrangements meet your requirements
Step 2
Calculate the VOLUME of the room in cubic metres (m3) by multiplying the lenght x width x height.
Step 3
How many air changes (AC/H) are required.Work out how fast one complete ‘air change’ needs to be carried out under warm conditions (i.e the maximum you will ever need the fan to operate).If excess heat in a certain growing environment is a common problem, or there is a large volume of plants growing in a very restricted space you will need more air flow per hour than for a larger growing area which doesn’t suffer from too much heat build up with smaller plants.Growers commonly underestimate just how much ‘air exchange’ is required to remove excess heat and humidity, bring in fresh CO2 and generally create fresh air movement over all of the plant surfaces. As a comparison to greenhouse crops growing in full sunlight – one air change per minute or 60 air changes an hour are often aimed for with large, mature crops growing under warm, humid conditions. However, in a grow room situation, one complete air change obtained in 4-5 minutes is acceptable. Obviously this needs to be more frequent (one complete air change in 2-3 minutes) where lighting is creating a lot of extra heat to be removed or when a CO2 generator is being used.
Step 4
Use the following formula: Volume (m3) x AC/H = Airflow (m3/h)

Step 5
Select a fan that does the airflow you require.