Incubator need a fan?

[Subzero]

Here's mine that Justin Kobylka made and used to hatch out my het clown in (how cool is it that his babies will now be hatched in the same 'bator???)

Hey can you tell me the specs on the fan and the dc converter? volts/amps etc. Im no dummy I can wire up a fan, I just dont know whats fan and plug will work together properly.