Used 5.2MM BTU/Hr Heatec model HCI-4010-40-G heater. Natural gas fired.Eclipse Winnox WX0850 burner. 15 HP Eclipse packaged-blower PRJ10055899. powered by WEG 15HP 3/60/230-460 volt motor. 583 sq. ft. heater rated at 800 PSIG @ -20 to 800F. NB# 1997. Purged control panel rated for hazardous locations, equipped with Allen Bradley Panelview Plus 700 interface, high media temperature controller, high stack temperature limit. 4" X 8' stack. Skid mounted. Serial #HI10-242. Built 2011. Previously heating natural gas for natural gas processing facility.