Aftermarket replacement blower for Osburn Mandalay Bay Insert. The replaces the original JD105 & JD106 blower that was 15 long and uses a larger 65mm diameter wheel. 165CFM, 100% ball bearing, including the outside spindle bearing. Some of the later model Mandalay Bay inserts moved to the 44070. 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 replacement blower. Power cords and blower chassis diagonal support braces are NOT included with replacement blowers. If you’re installing a blower for the first time, a blower kit may be required. Replacement blowers are intended to replace worn or defective blowers and do not include the components of a full blower kit. This blower may be used as a universal replacement blower, so please review dimensions before purchasing. For more information on the benefits of ball bearing blowers, read our. How Does a Fireplace Blower Work? L x W x H. 15 1/4″ x 4 1/4″ x 3 9/16. 12.0″ x 2.0″. Blower, Motor & Bearing. Class H (rated to 392°F). Mounts directly to OEM brackets. Noise Reduction Padding & Velcro. Included on blower housing where bracket and blower touch. See owner’s manual. Listing and template services provided by inkFrog.