Made from kiln-dried red cedar and stainless steel hardware, the sauna is large enough to seat four people, and can be set up in a bathroom, bedroom, recreation room, garage, or an outdoor location such as a backyard or by a pool. This centuries-old Scandinavian custom helps improve circulation, relax muscles, burn calories, relieve arthritic pain, cleanse skin, and relieve stress. Like all true saunas, this model uses hot rocks to create heat. Relative humidity levels are controlled by the bather sprinkling water on the hot rocks a gentle method of heat radiation that prevents the uncomfortable electric toaster feel of electrically heated saunas. Breathable, solid wood construction ensures the interior surface temperature is kept low, while delivering penetrating heat that soothes and relaxes. Free air flow design uses natural convection to bring fresh air into the heater from below and to disperse it inside the sauna, promoting quick warm-up time and energy efficiency. Includes internal thermometer (sauna maximum temperature is 200F), and wall light. Do not place on carpeted surfaces. Some assembly required. Plugs into a dedicated 230V-30A circuit. 72" L x 47" W x 76" H. (564 lbs.) Premium and Express Delivery not available. Driver will require customer assistance on delivery. A day time phone number is required for delivery.