Monessen Variable Thermostat Controlled Single Forced Air Blower BLOTDLMonessen Variable Thermostat Controlled Single Forced Air Blower BLOTDL Product Details Monessen BLOTDL Variable Thermostat Controlled 160 CFM Blower Kit provides a premium blower kit for your fireplace. Featuring heavy duty construction that's been assembled and tested in the U. S. A., this unit offers a high quality and reliable design. With its thermostatic on off switch, this blower can operate automatically at set temperatures, while the 160 CFM