April 2010 – Space-Ray has expanded its line of unitized, low-intensity, gas-fired infrared tube heaters and now offers 19 different heaters in more than 100 configurations. Available in both natural and propane gas, the new ETS/ETU Series range in capacity from 40,000 to 250,000 Btu/hr. System lengths vary from 15' to 80', depending on the model selected. The ETU Series comes in seven different configurations and provides more uniform heat distribution, making it ideal for spot and high heat loss heating applications. In contrast, the ETS Series is available in multiple configurations, including straight, L-Shape, Expanded U-Shape or Z-Shape.