- "Wood type" is a required field.
- "Sauna heater type" is a required field.
- "Roof covering" is a required field.
- "Door type" is a required field.
- "Windows in the front" is a required field.
- "Windows at the back" is a required field.
- "LED lighting" is a required field.
- "Bluetooth speaker system" is a required field.
- "Sauna accessories kit" is a required field.
- "Metal tightening bands for panoramic window" is a required field.
