SaunaLife Rounded Sauna Stones are olivine diabase sauna stones, 1" to 2" (3–5 cm) across, sold in 33 lb (15 kg) boxes. They are the stones SaunaLife specifies for the SaunaLife Titan SL1 propane sauna heater, whose stone basket holds 44 lb. SaunaLife describes them as durable stones that retain heat efficiently and give soft steam.
How many boxes of stones does the Titan SL1 need?
Two. The Titan SL1 holds 44 lb of stones and each box contains 33 lb, so one box is not enough to fill it. Two boxes (66 lb) fill the basket with about 22 lb to spare.
Can these stones be used in other sauna heaters?
Only where that heater's manual allows 1" to 2" stones. Sauna heaters are designed around a specific stone size and quantity, and many specify larger stones, so check your heater's manual before using these in anything other than the Titan SL1.
How do you load the stones in the Titan SL1?
Stack the stones somewhat tightly in the Titan SL1's stone basket, leaving small gaps for airflow, without forcing or compacting them; avoid large gaps, which increase direct radiant heat. A single layer can also sit over the heat column cap. SaunaLife's manual includes the stones in the Titan's routine inspection.