The final step is to outline the final result of Total CFM calculation for your grow tent / room and to note required sizes for extractor and intake fans. Extraction fans are responsible for removing air and intake fans are responsible for bringing fresh air inside. The intake fan has to be 15% less powerful than the exhaust fan. This is because there should be negative pressure present in the grow tent / room.
Total CFM of Grow Room
184.7 run at full speed
Extractor Fan Size
184.7
Intake Fan Size
156.9
If you have negative pressure side walls of grow tent will be sucked in a little is all. Thats why I use a 6 Inch Charcoal filter and 6-inch inline fan as you can run on 3 or 4 speed out of 10. Can't even hear it running. But what you have will work fine but realize you will lose some of that 190 CFM if that is what its rated for is all. Plus, duct work and bends in duct will also cause CFMs to drop.
Figures are for 4' X4' X 6'-foot Tent
Many Calculators out there for Grow Tent CFM's