I have an old (square corner style) hova-bator with a turbo fan kit that we put in. I use to use it more but latley it sits in storage waiting on me. I need to get a new thermostat for it (the original finally burnt up in it) and a replacement vent plug. It has alway done good. I've had up to 3 doz. chicken eggs and upto 18 quail eggs in it.