Ventilation question

I am almost finished enclosing my flower room. It is 10'x10'x8'. What size fan and filter should I install now

10x10x8 = 800' Cubic Feet. get a high velocity inline fan you can used that's rated 2xTIMES 800CFM (CFM Cubic Feet Minute) or more. Preferably a couple however many it takes to keep all the bulbs cool, Any filter that fits the size of your ducting will be sufficient, the bigger the better in your case.. 6in or 8in high velocity fans are the best with CFM, however it depends on the reflectors and the grow area which is convenient for you! It also depends where your pulling your cool air from and where your exhausting your heat, how many fans you will need.