This comes with a two-pass horizontal shell with firetubes and an external furnace which is water - cooled above 8 TPH capacity. Adequate grate area, furnace volume and unique grate design make the boiler suitable for burning low quality Indian coal and other agro wastes such as rice husk, nut shell, neem hull etc. This is a steel cased unit and comes with ID and FD fans, multiclone valves, mounting & fittings.