do saunas need ventilation

Flat Floor Kit: Upgrade to a flat floor kit for added safety and comfort. Without this kit, you will walk directly on the curve of the barrel sauna, which may not be as comfortable or safe.
Vista Window: Choose to upgrade to a Vista Window for added natural light and an outdoor view. Without this upgrade, the rear wall will be solid wood.
Door Upgrade: Select an upgraded door option to enhance the overall look and feel of your sauna. Without this upgrade, an all-glass option will be sent.
LED Light Kit: Upgrade to an LED light kit for added under bench lighting, creating ambiance and a relaxing atmosphere. Without this upgrade, a standard strip will be sent for placement on the back wall.

How to get sauna ventilation requirements right (and why it matters): Essential guidelines for safety and performance

Getting sauna ventilation requirements right isn't just about following building codes...