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Harvia R-991 sauna heater stones stacked inside a sauna heater, ready for use in a traditional sauna heating system.
Harvia R-991 sauna heater stones in a basket, ready for installation in a traditional sauna heater system.
Harvia R-991 sauna heater stones stacked inside a sauna heater, ready for use in a traditional sauna heating system.
Harvia R-991 sauna heater stones in a basket, ready for installation in a traditional sauna heater system.
by Harvia

Harvia R-991 Sauna Heater Stones

$142.99 - $142.99
$142.99
$142.99 - $142.99
$142.99

Free curbside freight shipping to the continental US. White-glove delivery available.
Get a quote or talk to a specialist

Questions on freight, lead time or setup? Call or text Clark, the owner: 732-320-9269. Same-day replies.

  • ✓ Authorized dealer for SaunaLife, Harvia, The Outdoor Plus, HPC and Kohler, with full manufacturer warranties
  • ✓ Free freight shipping to the continental US, white-glove delivery available
  • ✓ Price-match guarantee
  • ✓ Talk to the owner: 732-320-9269
Shipping information
  • Free curbside freight shipping to the continental US. White-glove delivery is available; ask us for a quote.
  • Large items ship by freight carrier to your curb; the carrier calls to schedule a delivery window.
  • Someone must be present to sign and inspect. Note any damage on the delivery receipt.
  • We confirm your delivery date before anything ships. Questions on lead time? Call or text 732-320-9269.
Returns & warranty

We are an authorized dealer for SaunaLife, Harvia, The Outdoor Plus, HPC and Kohler, so every product carries the full manufacturer warranty.

Price-match guarantee: if you find a lower price from an authorized retailer, let us know and we will work to match it.

For returns, see our refund policy, or call or text Clark at 732-320-9269.

Harvia R-991 Olivine Diabase Sauna Heater Stones — Rounded, 5-10cm (2-4 inch). 33 lb box.

The R-991 rounded stones are hand-selected to resemble river stones from great rapids — they produce a softer, gentler steam than angular split-face stones, as water flows smoothly to the lower layers and reaches a larger surface area. Best used in the upper layers of heaters with larger stone capacities, with angular stones in the bottom layers for optimal performance.

Note: Each natural stone is unique. Purchasing one extra box is recommended to allow you to select the best stones for fit and placement.

  • Material: Olivine diabase, hand-selected rounded form
  • Style: Rounded (softer steam than angular split-face)
  • Size range: 2 to 4 inches (5-10 cm)
  • Contents: One 33 lb box
  • Compatible with electric heaters and wood-burning stoves
  • Does not contain harmful ingredients

Shipping: Typically ships within 1-3 business days.

Questions? Call us: 1-732-320-9269