Sauna heater stones Harvia Black Vulcanite 10-15 cm 20 kg Spirit Components The Harvia M3 SL model

The Harvia M3 SL model is designed for people who want to conveniently heat their sauna from another room or outside the building

You can also achieve a better clean by immersing the whisk in vinegar water

and simple plank seat

While you enjoy your sauna bath

Sauna heater stones Harvia Black Vulcanite 10-15 cm 20 kg Spirit Components The Harvia M3 SL modelBlack vulcanite sauna heater stone is a small granular, dark grey stone. When wet, the stone shines black making it a great looking option with selected Harvia heaters. The stones volcanic origins date back to ca. 2000 million years. Based on its structure and composition, vulcanite is a good choice for a sauna stone as it is hard and durable.