Kiln Dried Birch Logs Wholesale - Bulk Bag Logs 250kg Our Kiln Dried Birch Logs fit most wood burning stoves and within the bag you will get a mixture of log widths which are all up to a maximum 25cm (10inches) in length. All our logs have been kiln dried to below 18% moisture content which will give you a long slow burn with maximum heat output and low emissions. One Tree Planted with every order. Ready to Burn certified the UK Government stamp for firewood. Save 5% using our subscription packages & ensure you get priority in the busy heating season. Sustainably Sourced Low moisture content less than 18% Sourced from FSC approved sustainable woodlands Approx Length of Logs: 25cm (10 inches) Approx Diameter of Logs: 5-15cm  Delivery within 2-3 working days Express Delivery 1-2 working days Dimension: Length 1 m x Width 1 m x Height 1 m Approx weight of 250 kg - kiln dried birch logs