Prevents drafts, odors and debris from entering your home through an unused fireplace or wood stove opening. Reduces heat loss in winter and keeps cooled air inside in summer, helping lower heating and cooling costs. Simple, loweffort solution to improve comfort and energy efficiency without modifying your fireplace. Key features Twelve builtin magnets: Twelve powerful magnets are placed around the blanket. Each magnet's magnetic strength can reach 1.2 T, providing strong attachment to a metal fireplace frame so the blanket stays in place. Flameretardant construction: Outer layer is thickened flameretardant Oxford cloth for added safety; interior is filled with quality sponge and has split stitching to keep the lining secure. Lowvisibility finish: Black color blends with most fireplaces for a discreet look. Reusable and compact: Folds flat for easy storage when not in use. How it works The blanket seals the fireplace opening, blocking outside cold or hot air and preventing conditioned indoor air from escaping. Strong magnets hold the blanket tightly against a metal fireplace frame for a consistent seal. Compatibility and limits Designed to attach to fireplace metal frames that contain iron, cobalt or nickel. Magnets will not adhere to nonferrous frames (e.g., pure aluminum or brass). Magnets are not heat resistant. Do not expose the magnetic areas to sustained temperatures; prolonged exposure can reduce magnetic performance. Installation and storage Installation: Place the protruding side of the magnetic edge against your fireplace's iron frame; the magnets will automatically attach. Smooth and adjust the blanket so it lies flat and seals evenly. Storage: Fold and store the blanket when the fireplace is in use; it requires little space and is easy to handle. Performance and care Effectively reduces drafts, odors and debris from entering through the fireplace opening. Helps retain indoor heat in winter and keep cooled air inside during summer to reduce HVAC load. Keep away from prolonged heat. Clean and maintain according to the fabric and filler care guidelines to preserve flameretardant properties and fit. Practical use scenarios Winter: Close an unused fireplace opening overnight to reduce heat loss and lower heating costs. Summer: Block warm outdoor air from entering through the fireplace when the air conditioner is running to reduce AC runtime. Everyday: Prevent drafts, dust, leaves and odors from entering living spaces through the fireplace when the flue is closed. Note For safe and effective use, attach only to metal frames containing iron, cobalt or nickel, and avoid exposing the magnets to , sustained temperatures.