【POWERFUL MAGNETS & ADJUSTABLE SIZE】: There are a total of 8 powerful magnets on our chimney cover, which can be very securely attached to the chimney frame. Adjust the size of the product to better fit your chimney with our individually designed "mushroom" accessories, and the excess can be folded with the "mushroom". [Prevent cold in winter, prevent air conditioning failure in summer]: Do you have the same problem? In winter, cold drafts push the chimney into the room and to the ground, hanging our chimney cover completely eliminates the airflow up and down the chimney and into the room. In summer, cold air is sucked from the ground into the chimney. If you hang this fireplace insulation blanket, you can cut off the exchange of hot and cold air in the fireplace, and the air conditioner will work less in summer. 【Easy to install and store】: We have fixed the position of the magnets or hook and loop straps to ensure a minimum area of sticking surface and minimize damage to the