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After determining the CFM amount based on the entire size of your home, you can mix and match the different products depending on your preference of fans.
So, say you have a 3000 square foot home, you are basically needing a system around 6000 CFM's.
In order to get that target range you would mix and match different products based off of their CFM amount.
Example: 1 QC - 1500 is 1500 CFM's, so you would need 4 QC-1500's in order to get 6000 CFM's or 2 QC 2250's and 1 QC 1500.
Choose the areas you would like a fan and determine the amount of fans you would need, also make sure you have enough attic space above that area and have venting as well
If you have a flat roof home, or have no attic space/access take a look at our roof mount fans as well as our roof mount selection guide
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