The "dual 3/4 holes" and the spring loaded closures work well. If I have about 1/8 inch of the holes open to the air on all four sides I get 250-300F depending on where you measure. You can open or close them infanitely of course. I like the idea of being able to set them all the same all around the barrel/fire grate. Seems to me that the temps would be more even side to side. Hard to tell without a lot of temp probes.... ;^)
|