Once you’ve determined the type of system you need, it’s time to size your space.
Typically for exhaust we recommend a simple length x width x height /3 calculation. This will give you the amount of air (cubic feet per minute, CFM) that you will need to move to properly ventilate your space allowing for three-minute air exchange (all the air in the space is exchanged for fresh air every three minutes). This is the number you will match your filter to.
Example:
Room size: 10’x12’x8’ (960 cubic feet)
960 cubic feet / 3 minutes = 320CFM (Minimum recommended CFM to exchange the air every 3 minutes)
For recirculating systems, you can use the same length x width x height but divide by 1.5. This will give you a high cycle rate while still ensuring the removal of a majority of contaminants with each pass through the filter.
Can Fan Can 50 Filter
Max Exhaust CFM: | 420 CFM / 713 m³h @ 0.1 sec contact time |
Max Recirculating (Scrubbing) CFM: | 840 CFM / 1426 m³h |
Recommended Min Airflow: | 210 CFM / 357 m³h |
Prefilter: | Yes |
Flange: | 6", 8", 10" |
Outside Diameter: | 42 cm / 16.5″ |
Height: | 50 cm / 19.7″ |
Total Weight: | 25 kg / 55 lbs. |
Carbon Weight: | 19 kg / 42 lbs. |
Carbon Bed Depth: | 6.5 cm / 2.56″ |
Max Operating Temp: | 80˚C / 176˚F |
Pressure drop at max CFM | 180pa / .75″wg |