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Harvia

Harvia Rounded Olivine Diabase Sauna Heater Stones, 5 to 10 cm, 15 kg (33 lb) Box (R-991)

Harvia Rounded Olivine Diabase Sauna Heater Stones, 5 to 10 cm, 15 kg (33 lb) Box (R-991)

Rounded olivine diabase stones, 5 to 10 cm, used as a top layer for softer steam in any sauna heater.

Regular price $102.00 USD
Regular price Sale price $102.00 USD
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Request a return within 30 days of delivery. Approved change-of-mind returns carry a 15% restocking fee. Damage is made right. Return policy

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Split the cost into monthly payments with Shop Pay Installments, subject to approval. Financing · HSA/FSA

Description

Harvia rounded sauna stones are olivine diabase shaped like river stones from the rapids. Used as the top layer of a heater's stone bed, they let ladled water run down to the lower layers for a softer steam, and they work in all sauna heaters.

Specifications (Harvia)

  • Model / part number: Harvia R-991
  • Stone type: Rounded olivine diabase, gray
  • Stone size: 5 to 10 cm
  • Box weight: 15 kg (33 lb)
  • Box size: 4.72 x 11.02 x 14.17 in
  • Use: Top layer in any sauna heater

What you need to know before buying

  • Check your heater manual for the correct stone size and quantity.
  • Harvia recommends angular stones of the same size in the bottom layers, with rounded stones on top, especially in heaters with a small stone capacity.
  • Pile stones loosely so air can circulate. Tight packing can shorten heating element life.

In the box

One box of Harvia rounded olivine diabase sauna stones, 15 kg.

Warranty

Manufacturer warranty against defects.

Returns

Returns accepted within 30 days of delivery for unused, uninstalled items in original sealed packaging. Return shipping is paid by the buyer, and a restocking fee of up to 15% may apply (up to 50% if packaging is missing or the seal is broken). Installed items are handled as manufacturer warranty claims.

Related

Sauna heaters | Sauna accessories | Harvia

Specifications
Model / part numberHarvia R-991
Stone typeRounded olivine diabase, gray
Stone size5 to 10 cm
Box weight15 kg (33 lb)
Box size4.72 x 11.02 x 14.17 in
UseTop layer in any sauna heater

Specifications from the manufacturer. Dimensions are approximate.

Shipping

We ship to the 48 contiguous U.S. states and Washington, DC. Your shipping cost is calculated at checkout and shown before you pay.

You will get an order confirmation right away and tracking by email when your order ships. Questions about timing for a specific item? Call (945) 280-3243 or email support@restoresuite.com before you order.

Full shipping policy

Delivery

Large items such as saunas, hot tubs and cold plunge tubs usually ship by freight. The carrier contacts you to schedule delivery. Please check the packaging and note any damage on the delivery receipt before you sign, then tell us within 48 hours so we can resolve it for you.

Before delivery day, measure doorways and hallways along the path to the install spot, and confirm the electrical requirement on the Specifications tab.

Warranty

Manufacturer warranty against defects.

If this item has a manufacturing defect within 30 days of purchase, contact us with your order number and a photo or video of the issue and we will make it right.

How warranty support works · Returns policy

What delivery looks like

A shrink-wrapped pallet of cartons left at the end of a driveway by a freight truck
Freight items arrive shrink-wrapped on a pallet. The carrier schedules the drop-off and leaves it at the curb or end of your driveway, so plan help or a dolly to move it from there. Example photo of a typical delivery. Your packaging may look different.
Harvia rounded olivine diabase sauna stones R-991 retail box, 15 kg

Why this sauna

Rounded olivine diabase stones, 5 to 10 cm, used as a top layer for softer steam in any sauna heater.

  • Rounded olivine diabase, 5 to 10 cm
  • 15 kg (33 lb) box
  • Top layer for a softer steam
  • Works in all sauna heaters
Close-up detail of the Harvia Rounded Olivine Diabase Sauna Heater Stones, 5 to 10 cm, 15 kg (33 lb) Box (R-991)

Will it fit your space?

The numbers to check before you order. Full details are on the Specifications tab.

Stone size
5 to 10 cm
Box weight
15 kg (33 lb)
Box size
4.72 x 11.02 x 14.17 in

Sauna size calculatorRunning cost calculator

Before you buy: what to know

Based on the manufacturer's specs, manuals and our research.

  • Natural stones vary in shape and size; many owners buy an extra box to choose the best fit.
  • Stack loosely to keep air moving through the heater.

Not sure this is the right fit? Ask us or call (945) 280-3243.

Common questions

How many boxes do I need?
It depends on your heater's stone capacity, which is listed in the heater manual. Rounded stones go on top, with angular stones underneath.
Can I fill the whole heater with rounded stones?
Harvia recommends same-sized angular stones in the bottom layers for more heating surface, with rounded stones on top.
Will they fit my heater?
Harvia says the rounded top-layer method works in all sauna heaters. Check the heater manual for stone size.
Why buy an extra box?
Each natural stone is unique, so a spare box lets you pick the best fitting stones.

Choosing the right setup can be tricky. We are here to help.

Tell us your space, power and how you plan to use it, and we will help you compare models honestly, including whether this one is the right fit.

Why buy from Restore Suite

Warranty terms up front

Each product page states its warranty coverage, and we help you use it if anything goes wrong.

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One point of contact

We handle your questions, delivery issues and warranty claims with the manufacturer for you.

Honest guidance

Free guides and calculators for sizing, running costs and safety, so you can decide with real numbers. See the research