Description Check below for Sizing Chart Includes Amerec IT Control or Upgrade to T100B Control Specifications Ideal for Commercial Steam Rooms. Engineered for Easy On-Site Maintenance and Hands-Off, Automated Operation. One or Two Room Operation with each Room Controlled Individually by Separate Low-Voltage On/Off Controls. Controls can be Remote or Boiler Mounted. ASME Certified Low-Pressure Vessel. UL Listed. Made in the USA Sizing Chart 12.0KW - Up to 550 cu ft. 18.0KW - Up to 900 cu ft. 24.0KW - Up to 1200 cu ft. 30.0KW - Up to 1500 cu ft. 36.0KW - Up to 1800 cu ft. 42.0KW - Up to 2100 cu ft. 48.0KW - Up to 2400 cu ft.