Model 4570 - The 4570 Web-Dri combines infrared and convection technologies to dry at speeds from 300 to 500 feet (91 to 152) per minute. The system is the ideal choice when you are running a variety of basic applications that can be effectively dried with infrared heating. This Web-Dri is available for webs up to 41 inches (1041 mm) wide. The system’s drying chamber is zoned into six-inch (152-mm) wide heat regions that you can selectively turn off or on to provide heat only in the area where drying is needed.