Heat-treated pine board 26x140x2400mm ThermoD. Quality A/B. Packaged in sets of 3 (7.2m each). 40 packs / 288m² for sale. Delivery 89.00€. Beautiful brown shade, natural look for all saunas. Heat treatment modifies wood at over 160°C, improving rot resistance, weather resistance, and thermal insulation. Recommended to treat with paraffin oil.