well i was wondering what the channels were made of... and to my surprise, it's brass?!?:eeek: but the fins are copper
i did some searching (google
) here's some links to prove my point
#1
this is a really good read...
linky
this is kinda of a shock to me since i thought they're made of copper
sorry if some of you know this already, but i would have never figured it.