all you hafta do is match the total volume.
3.14 times radius squared, times the length= total volume or (3.14*r2)h and then figure out the volume of size chimney you want to use and match the lengths to the size required.... if that makes sense
2*2=4*3.14=12.56 sq. inches
12.56*30=376.8 cubic inches for the single stack
2*2=4*3.14=12.56 sq inches
12.56*15= 188.4 cubic inches for the double stacks
188.4*2= 376.8 total volume
so yes it will work fine!
As one who gets on his soapbox occasionally - I have to say don't pick on Frank...
...he doesn't know any better than to tell the TRUTH
the WHOLE truth ...
and nothing but the TRUTH!
And on the eighth day God created barbecue …. because he DOES love us and he wants us to be happy.
Current smokers: Egor (trailered RF) and Easybake (tabletop pellet drive)