To connect the Stoveman sauna heater with the chimney it is recommended to use pipes with CE marking withstanding a gas burning temperature of at least 600 degrees. Suitable for sauna rooms with capacity.140 kg The stones are not included in the set. The heater stones on the picture have an illustrative purpose. 50 × 80 × 70 cm (L/W/H). However, if the goods are out of stock and we are waiting for new stock to arrive, it may take us one to two weeks to replenish supplies. If you have any technical questions, feel free to ask, we will reply within 24 hours, except for weekends.