Centrifugal Fan (4",6",8",10",12")

  • Sale
  • Regular price R 1,365.00
Tax included. Shipping calculated at checkout.

Please make sure that these fans are wired up CORRECTLY ! Although the fan may function for a period of time when wired INCORRECTLY, it will soon burn out the motor’s windings, rendering it obsolete. This is not covered under warranty and will not be refunded or swapped out.



  • Easy to install
  • Performance up to 0.51m3/second.
  • Can be mounted at any angle and suitable for on intake and/or discharge side and for supply or exhaust application.
  • Suitable for ambient operating temperatures of up to 50° C.
  • Does NOT include electrical cord or 3-point plug


  • External motor squirrel cage induction motor.
  • Electrical  supply, 220-240v.
  • Single phase.
  • Bearings are sealed for life.
  • Can be wired to run at 1 of 3 speeds ( Low , Medium or High ).
HIT -100 Inline Fan = 216 m3/h
HIT -125 Inline Fan = 328 m3/h
HIT -150 Inline Fan = 460 m3/h
HIT -200 Inline Fan = 900 m3/h
HIT -250B Inline Fan = 1100 m3/h


 HIT Dimensions

HIT Technical Data

HIT Performance


HIT 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.