Orbis Stone Cage — FinSteam Cage for Botnia 81 & Aurora 81 Gas Sauna Heater

Steam & Oak is the first UK retail partner for FinSteam.

Standalone Orbis stone cage — upgrade or replacement for your FinSteam heater

The Orbis is the FinSteam-designed stone cage that sits on top of the Botnia 81 or Aurora 81 gas sauna heater chassis. Fully compatible with all FinSteam heaters — including older Botnias bought before the Orbis line existed. Buy standalone if you're upgrading the look of an older heater, replacing a damaged cage, or moving up from the Orbis 11 to the Orbis 14 to take more stones.

Which size should I pick?

• Orbis 11 — 20-25 kg stone capacity. Default for most domestic barrel and cube saunas. The cage that comes with the R11 and R11S heater variants.
• Orbis 14 — 25 kg+ capacity. Larger sauna volume (8-12 m³) — more stones for stronger löyly. The cage that comes with the R14 and R14S heater variants.

When to buy a standalone Orbis

• You already own a Botnia 81 in the base O configuration and want to add a proper cage.
• You're upgrading from an older FinSteam heater that pre-dated the Orbis design — the new cage fits the same chassis.
• You want to upgrade from Orbis 11 to Orbis 14 to take more stones for a larger sauna.
• Replacing a damaged or aged cage.

Pairs with

• Botnia 81 or Aurora 81 heater (any variant).
• 40 kg sauna stones — sized for both Orbis 11 and Orbis 14.
• Njord heat shield + Halo safety rail if you're building up to the full S safety pack.

Free UK delivery.