The C Series is fully packaged and designed to provide maximum energy efficiency at minimum cost. This is a great economical selection for a retrofit or upgrade of an existing boiler room. Americas Boiler CompanyThe Burnham Commercial C Series compact packaged boiler was designed using our years of boiler experience and is sold and serviced through the largest and most experienced network of sales representatives in the country. With a complete commercial product offering and unmatched sales and technical support, its no wonder why we are Americas Boiler Company!Packaged Boilers That Fit Through A DoorThe C Series Firetube boiler is fully packaged and designed to provide maximum cost and energy efficiency. The C Series boiler fits through any standard 36 x 80 doorway, eliminating the need for any costly building alterations or difficult site assemblies. This convenient size allows for easier and less expensive retrofit or upgrade of an existing boiler room.