The Series 7000 indirect-fired, gas heating line from KING (Owatonna, MN) features industrial grade four-pass heat exchangers with integrated power exhausters, power burners, industrial-grade flame safeguard controls, and gas train components; 15:1 turndown ratio burners; and capacities from 200,000 Btu to 6 mbtu with up 80,000 cfm in a dual-ducted environment.