HVAC Air Duct Calculator

[purpLEsmoke]

Hey fellow growers, i was researching cfm loss through ducting & i came across this calculator http://efficientcomfort.net/asp/AllDuct_Web/AllDuct_Web.asp

I was wondering if anybody could help me and give a hand to figure it out.

Many thanks, hope it comes in handy.

PEACE

 

[socialist]

What exactly are you trying to figure out?