Empire FBB4 Variable Speed Blower Kit with Temperature Sensor. This original factory equipment Empire FBB4 blower kit includes the SVC1 variable speed control kit and thermostat temperature sensor. The FBB4 is used in several universal fireboxes from Empire, American Hearth, Vantage Hearth and White Mountain Hearth. Power cord and mounting bracket included. A fireplace blower kit is an efficient and affordable way for you to finally take advantage of your fireplace’s wasted heat energy. A properly installed blower kit will last for years and provide your home with energy saving heat. Benefits of Adding a Fireplace Blower. Improves fireplace efficiency by as much as 80%. Helps reduce costly energy bills. Heats large rooms effectively. Installs quickly and easily. Dual ball bearing blowers (individually replaceable). Pre-wired for easy installation. Rheostat variable speed control. L x W x H. Blower, Motor & Bearing. Class H (rated to 392°F). Rheostat Variable Speed Controller. Jefferson Deluxe (VFD32, VFD36, VFD42), Jefferson Premium (VFP32, VFP36, VFP42), Jefferson Premium Multi-Sided (VFP36), Lincoln Premium Multi-Sided (VFP36), Loft See-Through (DLCX36), DVCD32, DVCD36, DVCD42, Madison Premium Multi-Sided (VFP36). VFD32, VFD36, VFD42, VFP32, VFP36, VFP42, VFP36, VFP36, DLCX36, DVCD32, DVCD36, DVCD42, VFP36. VFD32, VFD36, VFD42, VFP32, VFP36, VFP42, VFP36, VFS32, VFS36, VFS42, VFP36, DLCX36, DVCD32, DVCD36, DVCD42, VFP36. Breckenridge Deluxe (VFD32, VFD36, VFD42), Breckenridge Premium (VFP32, VFP36, VFP42), Breckenridge Premium Multi-Sided (VFP36), Vail Premium Multi-Sided (VFP36), Loft See-Through (DLCX36), DVCD32, DVCD36, DVCD42, Tahoe Premium Multi-Sided (VFP36). Listing and template services provided by inkFrog.