ENERGY SAVING: Helps prevent drafts, odors, and dirt from entering your home through a fireplace or wood stove. In winter, the fireplace blocker stops heat loss, keeping you warm and reducing heating costs. In summer, they can block the loss of cold air, block the heat from outside, and the air conditioning uses less power, truly achieving the purpose of saving energy and money. TWELVE POWERFUL MAGNETS BUILT-IN: There are twelve powerful magnets built into the fireplace blanket, the suction force of each magnet can reach 1.2T, which can be strongly adsorbed around your iron fireplace frame without falling off, and the black color makes it blend in with the fireplace, you won't even notice it because magnets are not heat resistant. So do not place the magnet in a high-temperature environment for a long time, otherwise, the magnet will reduce its magnetic performance. HIGH QUALITY: Our magnetic fireplace cover is made of high-quality thickened flame-retardant oxford fabric, filled with high-quality sponge, the dividing line prevents the inner lining from moving, strong magnets ensure that the fireplace blanket can be tightly attached to the fireplace, effectively blocking the cold/hot outdoor air and achieving thermal insulation effect. Tip: Magnets can only be attached to metal frames of fireplaces that contain iron, cobalt, and nickel elements. INSTALLATION & STORAGE: You just need to place the protruding side of the magnet on our fireplace blocker, close to the iron frame of your fireplace, it will automatically adsorb around your fireplace, strong adsorption, don't worry about it falling off, adjust well and keep it flat, it can block cold/hot outdoor air. Our fireplace blocking blanket is easy to fold and store when not in use, without taking up much space. PACKAGE INCLUDES: You will receive a 40x32 inch/100x82cm fireplace cover with built-in magnets and an installation manual. Tip: To extend the life of the fireplace blanket, it is recommended to use it after the open fire in the fireplace has extinguished. Due to its large size, it is vacuum packed. Open the package and hang it in a ventilated place for 24 hours before use. It will return to its normal thickness.