No drilling required, quick and easy installation! Exquisite appearance decorates your living room well, making it neater and more beautiful. Cold drafts push down chimney into room and onto floor in winter, cool air pulled from floor up chimney in summer. If you hanging this fireplace blocker blanket, cuts off the exchange of cold and hot air in the chimney, keep all the warm in your home during the winter and cold air during the summer. No lost of heat during the winter time, AC will run less in the summer time. The fireplace draft covers indoor is effective in making little kiddos and pets less interested in the fireplace, so they aren’t playing with the fireplace anymore either. NOTE 1: The fire place blocker blanket is not fire retardant, please keep away from high heat or remove the fireplace blanket before you light the fire. NOTE 2: Please make sure to factor the door handles in when measuring your fireplace, and choose a slightly up in size that the actual opening.