ballast mounting ideas anyone?

looking for a good way to mount my 70 watt hps remote ballast.can anyone point me in the direction of a good faq or some pics of a good setup?thanks in advance.

I am going to be mounting my 600w ballast outside my grow closet (so it doesnt cause heat to build up inside) and mounting it right inbetween my intake holes. That way the cooler hair hits the ballast as it goes thru the intake holes.

Definately put them somewhere where the heat won't contribute to the grow space if possible.