Standard heat supply & ventilation for residential rooms

[Paul Sweet]

Somewhere between 1/2 and 1 CFM per SF should be close enough for sizing chases.

Just make sure you size it for flex duct!

baypoint

check this:

http://www.wisdomandassociates.com/education/bpi/calculators/ASHRAE%2062.2-2004%20Ventilation%20Calculator.htm