Measuring only 79 H x 34 W x 109 D (inches), the Benchmark 6000 (BMK6000) features 15:1 turndown for energy efficiency, Low NOx emissions, and high reliability in an unmatched compact footprint that is half the size of any other 6 million BTU/hr boiler on the market. Incorporating AERCOs field-proven stainless steel, fire-tube design, the BMK6000 provides consulting-specifying engineers, facilities management, and building owners with a boiler that provides flexibility to fit in both retrofit and new construction that require one or multiple 6 million BTU/hr boilers.