FBK-300 (H7841) Fireplace Blower Kit for IHP, Lennox & Superior MLDVT / SLDVT Lo. Genuine FBK-300 (H7841) fan kit assembly for MLDVT and SLDVT louverless gas fireplace models. Installation of blower for these modesl requires removal of the glass, gas logs and burner assembly. Please refer to the installation instructions provided with this kit for additional details. Can also be used if a dedicated wall switch was added for the blower. Blower uses a speed control module that houses the snap sensor and speed controller, which mounts to the front lip of the stove via a tab/slot and screw. 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. 100% ball bearing blower. Pre-wired for easy installation. Galvanized mounting bracket with noise reduction padding. Full range rheostat variable speed controller with on/off position. Automatic thermostat sensor with magnetic bracket. Heavy duty grounded 3 prong power cord. L x W x H (with bracket). 13.25″ x 3 3/4″ x 4 3/8. L x W x H (blower only). 12.5″ x 3.73″ x 3.23. 9.57″ x 1.375″. Blower, Motor & Bearing. Class H (rated to 392°F). Bracket (included), fireplace will typically have two flush mounted floor tabs that bend up and secure the bracket in position. Rheostat Variable Speed Controller. Yes, inline full RPM range with on/off position. MLDVT-30, MLDVT-35, MLDVT-40, MLDVT-45, MLDVTCD-35. SLDVT-30, SLDVT-35, SLDVT-40, SLDVT-45. Listing and template services provided by inkFrog.