Our UZY6 is ORIGINAL replacement blower fits several Astria, BIS, Lennox and Superior wood fireplaces. 100% sealed ball bearing, 130 CFM, quiet and easy to install. Intended to fit original UZY6 blower kits that were included with the fireplace. To remove old blower, consult installation instructions and the steps itemized to replace the blower. In most cases, the blower is removed through the access plate in the firebox floor. See compatibility list below for fitment and cross-references. 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.