An energy efficient fire-resistant blanket that adheres to the exterior of your fireplace screen following a wood burning fire experience. The carbon fire material attaches to your fireplace screen with industrial grade magnets. The goal of the Fireplace Blanket is reduce heat loss up the chimney while the flu is kept open due to the exhaustion of the embers. Using the Fireplace Blanket can save up to Six dollars a night in lost energy. In the US alone, over Six Billion dollars of energy cost escape up the chimney each year. Try the Fireplace Blanket and BE SAFE. Conserve Energy Save Money Sizes Small 30 H x 36-watt - Medium 32 H x 42-watt - Large 36 H x 48-watt - Ex Large 48 H x 55-watt.