Question: What are the differences between "pre-built", "pre-cut", "outdoor" and "portable" traditional saunas?
Answer:

Pre-Built (Modular) Saunas come in modular insulated panels that are assembled together to form a fully functional room.

Pre-Cut Sauna Kits require that you frame up your own walls and provide your own insulation. Tongue and Groove boards from the kit are provided to attached to the inside framing of your room.

Outdoor Traditional Saunas are exactly like a pre-built's in addition to having a roof package option.

Portable Traditional Saunas are small modular rooms that are capable of plugging into standard wall outlets (15amp or 20amp).

Question: Can the Portable Sauna just plug into a regular 110 voltage outlet?
Answer: The 1.7kw portable saunas plug into a dedicated 15 amp/120 volt outlet. The 2.1kw portable sauna plugs into a dedicated 20 amp/120 volt outlet.

Question: What is the advantage of the 2-Piece Portable Sauna?
Answer: The 2-piece Portable Sauna provides the user the option to move the sauna much more quickly on a single level home due to it being able to disassemble into 2-pieces by simply unlatching the hex-key latching system. Once separated, each piece can be rolled from room-to-room to the users desired location.

Question: How do you move the 2-piece portable unit?
Answer: The unit comes with optional caster wheels making it fairly easy to move.