1/2" away from the has boards, thanks, I can make it like that. I'm still waiting on the delta fans but have pretty much everything else. I am going to do the wedges tomorrow, so it's all ready to go when the delta fans arrive.
I just have the one s9 because I only have one 220v circuit available for mining, the rest are 110v. Although now that this space heater s9 can run easily on 110v, I can get something else to put on the 220v.
yeah it will do 4th and 400 watts with one board.
if you have the older firmware from dec 2018 low speed does less and is quieter.