American Hearth Automatic Variable Speed Blower CIB3American Hearth Automatic Variable Speed Blower CIB3 Product Details Why is the American Hearth Automatic Variable Speed Blower CIB3 an essential accessory for your fireplace? The American Hearth Automatic Variable Speed Blower CIB3 enhances the efficiency of your fireplace by circulating heat more effectively. It automatically adjusts its speed based on the temperature, ensuring consistent warmth throughout your space. This blower helps maintain