Yes. As long as you can fit your carboy/bucket with airlock or blowoff tube in there. You may need to remove the plastic can holder from the door to help it fit. Most likely you will want to buy a temperature controller as well.
The STC-1000 is available on both Amazon and eBay. I got both of mine (one for the fermenter chamber, one for the keezer) from Amazon since I'm a prime member and got free 2-day shipping.
That may sound like a good short-cut and it's better than nothing, but you won't get the accuracy nor the easy (and precise) adjustability that you gain with an STC-1000. Since it only cost about $30 to build one, why not do it right?