Do these units have to be put together , looking for one ready to go ?

Hello Greg, thank you for your question. These saunas are designed for quick in-home assembly and typically take about an hour. A "ready to go" one would be very large to ship and would not likely go through most doorways You may see some helpful customer pictures and comments on this page that will make you more comfortable with how easy they are to assemble. Please let us know if you have any other questions. https://www.saunasandstuff.com/infrared-sauna-reviews-pictures