CFM is a unit of volumetric capacity, commonly used by manufacturers of filters, fans, blowers. (CFM = Cubic Feet per Minute).



How do I calculate CFM and determine the proper matching of fan to filter to space?

The proper matching of fan to filter to space. You need to calculate your room cubic feet, L’ x W’ x H’. After you have your total cubic foot, divide by either 1, 2, 3, 4 or 5. The more contaminants, heat and odour in the room, the lower the number you want to pick. This will be how many times you want to exchange the air in your room in minutes. 


So if you have a 12′ x 12′ x 12′ room that is 1,728 cu.ft. An air exchange every minute you would need a 1,728 cfm fan and filter, every 2 minutes would be 864 cfm fan and filter, every 3 minutes would be 576 cfm, every 4 minutes would be 432 cfm fan and filter and every 5 minutes would be 345.6 cfm fan and filter. 

Note the maximum CFM numbers on each Air Box unit: *


These Air Box units bundle perfectly with our  Ruck inline fans (min/ max CFM ranges are): 

  • Air Box 1 Stealth – min 160-max 400 CFM | 4″ flange  (4″ – 6″ inline fan)
  • Air Box 2 Stealth – min 380-max 800 CFM | 6″ flange (6″ – 8″ inline fan)
  • Air Box 3 Stealth – min 750-max 1200 CFM | 8″ flange (8″ -10″ inline fan)
  • Air Box 4 Stealth – min 785-max 2000 CFM | 10″ flange (10″ – 12″ inline fan)
  • Air Box 4 plus Stealth – min 1050-max 3500 CFM | 12″ flange (12″ – 14″ inline fan)

* You can use a standard duct reducer/ expander to connect different sized fan to your Air Box filtration system
** You can add a larger fan to the larger Air Box units, like a commercial blower at 2800 CFM or 3200 CFM
*** Air Box is available in 4″, 6″, 8″, 10″ and 12″ flange size


Where do I position the inline fan in relation to the filter?

Inline fans can push or pull the air…we recommend the fan PULLS the air through the filters, but both options work perfectly!

1. Make the exhaust run as short as possible
2. Make as few turns as possible
3. Pull in fresh, cool air from the bottom
4. Exhaust hot, used air from top


Replaceable activated carbon filters destroy odours, capture organic and non-organic contaminants and scrub pathogens from the air. Our high-flow carbon filters are made from exclusive 100% premium activated charcoal.

 

100% Activated Charcoal: Activated carbon granules are an “adsorbent” with well-developed pore structures allowing for a full range of adsorbent retention. The high hardness number allows for minimal granular breakage and the kindling point of this activated carbon is usually high. This activated carbon is particularly well suited for removal of airborne particles, neutralize odours, and chemicals, and eliminate germs, viruses, and bacteria. 


For residential, commercial and industrial applications. Order Air Box filters and Ruck inline fans direct from the manufacturer at: www.airboxfilter.com

 

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