The 621-D adjustable sliding vent cover is designed to regulate exhaust airflow in a sauna, helping improve heat distribution, introduce fresh air, and enhance the overall experience.

Convectional venting—using natural airflow—is the most common method. A typical setup includes a low inlet vent near the heater and a high outlet vent on the opposite wall. Some configurations also include a second inlet vent at mid-height for more precise airflow control.

The 621-D functions as the outlet vent. You can manually slide it open or closed to adjust ventilation. It’s usually kept closed while the sauna heats up, then opened slightly once the desired temperature is reached.

This vent cover installs over a framed wall opening, providing a clean, finished look while concealing the vent cavity.

• 285 x 155 mm