3Pcs Ceramic Wool Sponge for Bioethanol Fireplace Firebox Safety Leakproof Combustion Ethanol Tabletop Smokeless Fires (30 * 10 * 15cm) High-density ceramic fiber Made of high-density ceramic fiber with a high melting temperature, this fireplace firebox safety bio fire product is designed for fireplaces, fireplace ovens, and gel burners. It provides a consistent flame even at low levels and helps extend the lifespan of the fireplace. Enhanced safety The composition of this fireplace sponge increases burning time and improves safety by reducing flare-ups and minimizing flame release if the fireplace or burner is tipped over. Leak-proof combustion chamber This product helps maintain a sealed combustion chamber, reducing potential risks. Easy to use Designed for convenience, the fibers can be cut with scissors to fit your specific fireplace or burner. No additional tools or complex steps required. Versatile size and color Available in multiple sizes (30*10*5cm, 30*10*2.5cm) and a classic white color, this calcium-magnesium-silicate fiber blanket is compatible with various fireplaces and burners.