Combitherm Ultra Boilers are factory assembled unit, installed on a skid base frame requiring minimum site work for installation. This steam boiler too, operates on the function of both water and smoke tube combination type steam boiler. This unique and compact design is one its kind, with amazing fuel feeding flexibility (wood, coal, briquettes, petcoke, rice husk etc.) and redefined water & flue gas circulation for enhanced heat transfer to achieve maximum operational effectiveness.