HIVE Wood Series 13kW Sauna Heater Package HUUM HIVE Wood 13 Package features all the necessities you need to begin your sauna journey. This package comes complete with the HUUM HIVE Wood 13kW wood burning sauna heater and the corresponding sauna stones. The package has everything you need to transform your sauna space into your dream environment, and has been combined for use in sauna rooms from 212 to 459 cubic feet (CF).