The patent pending two-stage QTD Series offers a unique and innovative heating solution. Its design incorporates the modular benefits of high-intensity infrared with the application versatility of low-intensity infrared. Distinctive construction features include a multi-burner, multi-exchanger, multi-reflector platform optimized for a broad and even heat output pattern. The enhanced two-stage feature of the QTD Series increases comfort levels while reducing energy costs. CSA Design Certified for indoor or outdoor applications, the QTD Series provides the right choice for a wide variety of applications.