CanuckSigns
Active Member
I'm hoping someone here can shed some light on a question I have. i currently have an exhaust fan in my print room, I will be adding another piece of equipment that needs venting. The current fan is a 6" duct fan, outputting around 430 CFM. would I be able to replace the fan with an 8" one and add a 8"->6" reducer for the final 4' run out the back wall?
the setup would be"
8" pipe for about 15 feet, into an 8" inline fan, then a 6" reducer then 4 feet of 6" pipe out the back wall.
Cutting a larger hole in the back wall is not an option, landlord won't allow it.
i know the reducer will create a bit of a choke point, but if the 8" fan is rated for 900CFM, would it still pump out more air than a 6" rated for 430CFM?
the setup would be"
8" pipe for about 15 feet, into an 8" inline fan, then a 6" reducer then 4 feet of 6" pipe out the back wall.
Cutting a larger hole in the back wall is not an option, landlord won't allow it.
i know the reducer will create a bit of a choke point, but if the 8" fan is rated for 900CFM, would it still pump out more air than a 6" rated for 430CFM?