GFK-160A Heat N Glo Blower. GFK-160A Blower Fan Kit is designed for Heat & Glo fireplaces to circulate air around the firebox and enhance heat output. This complete fireplace blower kit offers a low cost solution to push heat created by the fireplace into your living space. Included with the blower kit. Variable Speed Switch, (rheostat control – like a light dimmer) which you can regulate air flow and any air noise from the fireplace fan and Thermo Switch (Thermodisc). Heat Sensor which automatically turns the Blower ON after the fireplace heats up and automatically turns the Blower OFF after the fireplace cools down. Please request a Return Authorization before sending anything back to us. We are always happy to help!