The rounded sauna heater stones have been mechanically ground to be round and smooth. In addition to the beautiful look, the benefit is that there is less sand and dust coming off the rocks, and in the heater the hot air will flow easier past the rocks.
Material: Olivine diabase stone
Weight: 15 kg per box
The heater rocks must be laid carefully and toughtfully into the heater, without forcing them, avoiding pushing or bending the resistors. Have patience, and each stone will find its place.
Remove the stones from the heater once per year, for inspection, replace any broken stones or stones with calcium or other deposit, and re-insert the stones carefully.