INcubator help...

so i'm building a incubator... i just ordered a helix and i measured the mini fridge for flexwatt sizes. i figured i'd run 4 inch along each shelf. My question is could i buy a piece of 11 inch flexwatt for the top of the fridge... or can you not wire 11 inch and 4 inch together?

Don't run 4 inch along each shelf...

Is the mini fridge completely square? Or does it have a curve inside?

My incubator is a Wine fridge. I have an 18" long piece of 11" heat tape at the bottom of the incubator, a fan in the wire shelf blowing up, and a fan up top blowing down to circulate the air.
Right now...it's holding 88.5 in all the tubs.

You don't need a lot of heat tape in a fridge. They are meant for holding temps.

The end of this vid shows my set up. I don't even plug in the strip of heat tape on the back and it works fine.

http://www.youtube.com/watch?v=gnEo1X40SPc