Is this an acceptable pre-wired fan to use in an incubator?

[Twisted Reptiles]

I would be worried about it getting to hot and shorting out and/or causing temp. spikes in the incubator.

I bought mine from Helix and havent had a single issue
http://www.helixcontrols.com/Fans.htm

Wow, those are crazy overpriced for what you are getting.

As far as the OP question, that rig looks like nothing more than a series of 80mm case fans. In which case, in theory they should be fine. But the only way you will know for sure is with a test with the unit. Could it cause temp spikes? You bet. Always need to test regardless.

If I was to go with those, I would get two of the double-fan units and put one down low and one up high in the incubator, depending on how big the unit is I suppose this could vary.

Just don't trust them with your eggs until you are confident in them. Test!

EDIT: Just reread your post with your incubator dimensions. Unless you are getting temperature variations throughout the incubator I don't know the you necessarily even need one or more fans. That is a relatively small incubator, so there isn't a ton of room for temp variance. I'd check to see if its necessary before you go down that road.