Kingsman Z46FK Temperature Sensing Fan Kit with Variable Speed Control provides a premium accessory for use with your Kingsman appliance. Featuring durable construction, this system has been designed for many years of reliable use. With its heat-activated design, this fan activates when the stove warms up and automatically deactivates when the stove cools off. The impressive design of this unit allows for a powerful yet quiet design, while the variable speed control can be adjusted as needed. Compatible with Kingsman Zero Clearance Clean View Circulating VentFree Firebox Series Gas Fireplaces, as well as Marquis Bentley Direct Vent Gas Fireplaces.