This blower kit may be used with gas fireplaces listed herein. The FBK-LIN-B blower kit is used when a unit-mounted variable speed blower control is desired. The blowers are installed beneath the rear of the firebox. When the fireplace reaches operating temperature, the thermal switch will turn on the blowers. Room air is drawn in through the bottom area of the fireplace, heated as it passes across the firebox, and discharged through the upper air exhaust area at the top of the firebox. The speed control can be turned up or down to the desired blower speed.