# Installing an externally fed sauna stove

**URL:** https://discuss.britishsaunasociety.org.uk/t/installing-an-externally-fed-sauna-stove/164
**Category:** General
**Tags:** build-advice, safety
**Created:** [19 October 2026 09:36 UTC](https://discuss.britishsaunasociety.org.uk/t/installing-an-externally-fed-sauna-stove/164 "2026-10-19T09:36:39Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![JimmyWS](https://discuss.britishsaunasociety.org.uk/letter_avatar_proxy/v4/letter/j/5daacb/32.png) [@JimmyWS](https://discuss.britishsaunasociety.org.uk/u/JimmyWS)
#### Post date: [19 October 2026 09:36 UTC](https://discuss.britishsaunasociety.org.uk/t/installing-an-externally-fed-sauna-stove/164/1 "2026-10-19T09:36:39Z")

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Morning all.

Like many others I am converting a horse box into a sauna. We are installing the Harvia M3 SL stove meaning it can be fed from outside the sauna. Does anyone have any experience with this? There isn’t much information online. Really after advice on how you protect the material/insulation within the wall itself and heat clearances etc.

Thank you. Any advice much appreciated.

Jimmy