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Firewood is made of locally supplied Lithuanian timber. The wood species we use to make firewood are: Ash, Oak, Birch, Alder, Pine and Fir. Each log can be cut into pieces of 25, 30 or 45 cm, split 4-6 times for 8-15 cm diameter and stacked into 1m³, 1,8m³, 2m³ or 2,2m³ boxes or bags of 9.5 L, 21 L, 30 L, 40 L or 60 Liters.
On the basis of density, the firewood species have their unique features. 1st group firewood burns at highest temperature and it is most suitable for house heating in bigger boilers. For the Barbeque fireplace or Sauna, the most suitable is Birch. The 3rd group firewood is burning at relatively low temperature; therefore it is safer for smaller furnaces to protect from cracking the chimney walls.
Firewood group | Calorific value (kcal) | Heat energy (KW) |
Group I: Ash, Oak, Birch | 2250 - 2500 | 2,65 - 2,93 |
Group II: Pine, Alder | 1800 - 1900 | 2,15 - 2,21 |
Group III: Fir, Aspen | 1500 - 1700 | 1,87 - 2,10 |