[benjburton]

A lot of great suggestions. However, for my sanity, which would have me wondering if it's going to get wet, or if I installed it well enough to hold, and not putting holes in my roof and dealing with more things to caulk, I think I'd rather buy a more compact one even if it cost more.
It does appear very water tight. The only thing I've read is that you should install with wires pointing down to keep water from possibly running down the wires into the unit.
Unfortunately, my low profile a/c really has nowhere else to mount this thing. It really is very tight in there.

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