The 600-1 fan kit is a dual blower kit designed to fit several Kozy Heat fireplaces. The blower kit includes all of the components you’ll need to successfully install a blower into your fireplace for the first time. The 600-1 kit uses a thermostatic on/off switch, which will automatically turn the blowers on and off at preset temperatures. In addition to the thermostat, the 600-1 kit also includes a rheostat variable speed control that gives you full control over the blower’s RPM range. Fits Kozy Heat: 231 (231-B, 231-G, 231ZC), 241ZC, 932 DV, 936 DV, 942 DV, 961 DV, Z-42 (Z42, Z-42, Z-42-CD) Kit includes dual 100% ball bearing blowers, galvanized brackets, magnetic thermosat, rheostat variable speed control, mounting hardware, power cord and wiring harness. Comes fully assembled and pre-wired. See our compatibility chart in description.