Here is a site with plans (uses lamps), and he also has a simple one for sale and also his book. I hope to build one soon. www.drlwilson.com/articles/sauna_therapy.htm#plans

You've probably already got an answer, but I just bought my infrared sauna at Overstock.com for $200. The shipping was $1, but they were having a special. Did you get your sauna already? If so, what do you think. I used mine for the first time today and I've got lots of questions for other infrared sauna users now.