The Series SM5 low-pressure modified Scotch boilers are highlighted in a brochure. The operating controls for both steam and water versions are listed. Equipment sizes and connection sizes for the 20- to 100-boiler horsepower (bhp) units are given; the 125- and 150-bhp units are custom-built boilers. Ratings and capacity data for all of the available units are given in chart form. Line drawings from different angles are also in the brochure. A chart contains general service access and fireside sampling information.