This magnetic fireplace draft shield eliminates winter weather drafts, keeps unwanted cold air out of your home and prevents heat loss. In summer, this fireplace vent cover can be used to keep hot and humid air out. This fireplace draft shield ensuresthat your chimney doesn't become a source of unwanted cold or hot air. Efficient: This draft shield vent cover improves energy efficiency, allowing you to save on your monthly utility bills. Even without a fire, your chimney continues to generate drafts, which can cause warm air to be drawn out of your home and replacedby cooler air outside. Our fireplace blockers are the perfect solution to this common problem. Hypoallergenic: This magnetic vent hood is the perfect windshield to reduce pesky and unwanted pollen and dust from entering your home through your fireplace.Perfect for wood or gas fireplaces, our winter and summer fireplace covers are the perfect companionfor your home chimney. EASY TO USE: Our fireplace draft stoppers use magnets to stick securely to the fireplace magnetic vents. Simply remove the plotter plug before using the fireplace and reuse it after the fireplace has cooled. Additionally, our draft stoppers can be easilytrimmed with a pair of scissors to better fit the vents of your specific fireplace.