( IE three prong / four prong )

It's the Whirlpool RF302BXGW model, circa 1999 I believe.

I need to know because we're replacing it, but aren't sure which to replace it with.

It's not really easy for me to get back and take a look at it, but it looks like it's plugged into something on the floor, not on the wall.

Also, the wires are all inside of a metal tube ( for safety reasons, I would think ).

If anyone can help me out, I'd appreciate it.

Thanks!

-Robby