{"product_id":"harvia-sauna-stones-5-10-cm-20-kg-box-ac3000","title":"Harvia Sauna Stones 5–10 cm — 20 kg Box (AC3000)","description":"\u003cp\u003eOfficial Harvia sauna heater stones in the small 5–10 cm size — the right stones for Harvia electric heaters including the Cilindro PC70 and PC90 range. Quarried olivine dolerite, chosen for heat storage, durability and clean, safe use at sauna temperatures.\u003c\/p\u003e\n\u003ch3\u003eWhy proper sauna stones matter\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat storage\u003c\/strong\u003e — dense stone holds heat and gives soft, even löyly when you throw water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety\u003c\/strong\u003e — only officially designated sauna stones should ever be used in a heater; ordinary garden stone can crack or spit at temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe right size\u003c\/strong\u003e — 5–10 cm is the correct grade for Harvia electric heaters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow many boxes do I need?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHarvia Cilindro PC70 — approx. 90 kg (5 boxes)\u003c\/li\u003e\n\u003cli\u003eHarvia Cilindro PC90 \/ PC90XE \/ PC90XW — approx. 80 kg (4 boxes)\u003c\/li\u003e\n\u003cli\u003eWall-mounted Harvia heaters (e.g. Vega) — typically 20–25 kg (1–2 boxes)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eStones should be rinsed before first use and stacked loosely so air can circulate — full instructions come with your heater. Replace sauna stones roughly once a year with heavy use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eContents:\u003c\/strong\u003e 20 kg box of Harvia sauna stones, 5–10 cm (product code AC3000).\u003c\/p\u003e","brand":"Harvia","offers":[{"title":"Default Title","offer_id":62303945458051,"sku":"AC3000","price":60.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0988\/1187\/1619\/files\/harvia-sauna-stones-5-10cm-ac3000-hero.jpg?v=1785944184","url":"https:\/\/www.steamandoak.co.uk\/products\/harvia-sauna-stones-5-10-cm-20-kg-box-ac3000","provider":"Steam\u0026Oak","version":"1.0","type":"link"}