External riddling grate . Effective after-burner control (tertiary-air for even greater burn efficiency) . Can be simply dismantled for ease of installation . Adjustable feet for uneven surfaces. Incorporates air wash control. Hamco Glenregan, 15kw Boiler stove. Heats up to 15 Radiators & Domestic hot water.Will also heat the room it is in up to 15 foot X 15 foot. Fully warranted intergrated boiler.