A magnetic fireplace draft cover can help reduce unwanted airflow, odors, and debris when a fireplace is not in use. The best choice depends on the opening’s dimensions and whether its frame attracts magnets. The 39-by-32-inch whumsdog and PAWBOSE covers suit larger openings; the whumsdog 36-by-27-inch and 36-by-30-inch versions offer smaller size options; and the Flehomo two-pack is designed for magnetic fireplace vents rather than a full fireplace opening.
| Product | Listed Size | Best For |
|---|---|---|
| whumsdog Magnetic Fireplace Cover | 39 × 32 inches | Large openings with compatible metal frames |
| whumsdog Magnetic Fireplace Cover | 36 × 27 inches | Smaller openings |
| whumsdog Magnetic Fireplace Cover | 36 × 30 inches | Openings needing a 30-inch height |
| UQM Fireplace Cover | 39 × 32 inches | Buyers seeking a padded Oxford-fabric cover |
| Flehomo Magnetic Draft Stopper | Two pieces, 36 × 6 inches | Magnetic fireplace vents |
whumsdog 39-by-32-Inch Magnetic Fireplace Cover
Best for: A larger fireplace opening with a magnetic metal frame. This cover measures 39 by 32 inches and is intended to help block drafts, odors, and debris when the fireplace is not in use. Its listed dimensions make it a practical size to compare against a wide, tall opening.
The cover is made from thickened, flame-retardant Oxford cloth with sponge filling. Its stitching is described as helping keep the inner lining in place. Twelve built-in magnets attach to compatible metal frames, and the black color is intended to blend with the fireplace.
- Choose this if: Your opening is close to the listed size and its frame attracts magnets.
- Why it was selected: It combines a larger listed size with padded construction and magnetic attachment.
- Limitation: The magnets will not attach to every frame, and the product information cautions against sustained high heat.
Measure the frame and opening before ordering. The cover is for use when the fireplace is inactive; it should not be left exposed to an active fire or high temperatures.
whumsdog 36-by-27-Inch Magnetic Fireplace Cover
Best for: A comparatively compact fireplace opening that measures near 36 by 27 inches. Like the larger whumsdog option, this model is intended to limit drafts and keep odors and debris from entering through an unused fireplace.
Its listed construction includes thickened flame-retardant Oxford fabric, sponge filling, and twelve built-in magnets. The magnets are meant to secure the cover to a compatible iron-containing metal frame. The smaller dimensions may be a better fit than a 39-by-32-inch cover when a larger blanket would overlap too much.
- Choose this if: The opening dimensions are a closer match to 36 by 27 inches than to the larger options.
- Why it was selected: It provides a distinct size choice while retaining the padded, magnetic design described for this product line.
- Limitation: The magnetic attachment requires a frame that attracts magnets; confirm this before purchase.
The manufacturer also warns that magnets can lose performance with prolonged exposure to high heat. Use the cover only when the fireplace is not operating and has cooled.
whumsdog 36-by-30-Inch Magnetic Fireplace Cover
Best for: Buyers whose fireplace opening is around 36 inches wide and 30 inches high. This option offers the same general style as the other whumsdog covers but provides a different height, making careful measurement important when comparing models.
The listed features include thickened flame-retardant Oxford cloth, a sponge-filled interior, and twelve magnets around the cover. It is designed to help reduce airflow, odors, and debris through a fireplace or wood stove opening. The product information describes use in both winter and summer to limit unwanted air exchange.
- Choose this if: A 30-inch height is a closer match for your opening than 27 or 32 inches.
- Why it was selected: Its dimensions fill a useful middle ground between the other listed whumsdog sizes.
- Limitation: Magnets only attach to suitable magnetic metal frames, and high heat may reduce their performance.
Check both the width and height of the area where the cover needs to sit. A close fit and a compatible frame matter more than choosing a cover based only on its nominal size.
UQM 39-by-32-Inch Magnetic Fireplace Cover
Best for: People looking for a padded 39-by-32-inch cover with magnets sewn into the blanket. UQM lists thickened Oxford fabric, sponge filling, and fine-thread sewing intended to keep the padding and twelve magnets organized.
The cover is designed for metal fireplace frames, and its magnets are intended to attach without additional accessories. The product description says it can help limit cold air entering in winter, hot air entering in summer, and ashes blowing into a room. Its size matches the larger whumsdog option, so buyers can compare their listed construction and fit requirements.
- Choose this if: Your frame is magnetic and the 39-by-32-inch dimensions suit the opening.
- Why it was selected: It offers another padded cover in the larger size category, with installation and frame requirements stated in the product details.
- Limitation: It is intended for metal frames only and must be used after an open fire is extinguished.
Do not assume that every metal frame is magnetic. Test the frame with a magnet, and allow the fireplace to cool before fitting or removing the cover.
Flehomo Two-Piece Magnetic Vent Draft Stopper
Best for: A buyer trying to cover magnetic fireplace vents rather than seal a full fireplace opening. The package is listed as two pieces, each measuring 36 by 6 inches, so it serves a different purpose from the larger blanket-style covers.
Flehomo describes the product as a rubber magnet draft shield that attaches to a magnetic vent. It is intended to help reduce heat loss in winter, keep hot and humid air out in summer, and limit dust or debris entering through a vent. The product details also note that air can continue circulating through a chimney vent when a fireplace is not in use.
- Choose this if: Your target is a magnetic vent and the 36-by-6-inch pieces suit its layout.
- Why it was selected: It addresses vent coverage, which is distinct from covering a full fireplace opening.
- Limitation: It only works on a magnetic fireplace vent; it is not presented as a full-size fireplace blanket.
Check the vent dimensions and whether its surface attracts magnets. For a full opening, compare the blanket-style covers above instead.
Buying Guide: How To Choose A Magnetic Fireplace Draft Cover
A magnetic fireplace cover is most useful when it fits the opening and can attach securely to the frame. Product descriptions commonly present these covers as barriers against drafts, odors, and debris when a fireplace is unused. A cover does not replace safe fireplace operation or maintenance, and it should never be used in a way that exposes it to an active fire.
How should I measure my fireplace opening?
Measure the width and height of the surface where the cover will attach, not just the visible firebox. Compare those measurements with the product’s stated dimensions. A 39-by-32-inch cover, for example, is a different choice from a 36-by-27-inch cover. Consider whether the cover needs to overlap the opening to attach along the frame, and check that nearby trim will not interfere.
Do not select a size based on width alone. If the height is too short, the cover may not cover the intended area; if it is too large, it may not sit neatly against the frame. Product listings do not all specify how much overlap is required, so use the frame layout and product dimensions when making a comparison.
Will magnets work on my fireplace frame?
Magnetic covers require a surface that attracts magnets. A frame can look metallic without being magnetic, so test it with a small magnet before buying. The whumsdog and UQM product details specify compatible metal frames, while the Flehomo vent stopper says it works only on a magnetic vent. If the surface does not attract a magnet, these products may not attach as intended.
Also consider the shape of the frame. A cover with magnets around its edges needs suitable contact points to stay in place. A vent strip and a full blanket have different attachment areas, so match the product type to the part of the fireplace you want to cover.
Should I choose a blanket or a vent cover?
Choose a blanket-style cover when you want to cover a full fireplace opening and the frame can support magnetic attachment. The whumsdog and UQM options in this list are this type. Choose a vent cover when the target is a smaller air vent. The Flehomo two-pack is listed as two 36-by-6-inch pieces and is not a substitute for a full-size cover.
Identify where the unwanted airflow is coming from before choosing. A cover for the wrong area may leave other openings exposed. If you are unsure whether the draft comes from the fireplace opening or a vent, inspect the fireplace and its surrounding frame first.
What materials and construction details matter?
The blanket-style products listed here describe Oxford fabric, sponge or foam filling, and built-in magnets. Padding may make a cover less flimsy than a single fabric layer, while stitching is intended to keep the filling in position. Compare these stated construction details without assuming they make one product fireproof or suitable for use near flames.
The Flehomo product instead lists a rubber magnet construction for vent attachment. Its form factor and intended use differ from a padded blanket. Select by function and fit rather than comparing unlike products as if they were interchangeable.
Can I leave a magnetic cover on during a fire?
No. The supplied product information cautions that the magnets can lose performance under sustained high heat, and UQM specifies use after an open fire is extinguished. Remove or keep the cover away from the fireplace whenever it is operating, and wait until the fireplace has cooled before handling it. Follow the fireplace manufacturer’s safety instructions as well.
Flame-retardant fabric should not be interpreted as permission to expose the cover to flames or high temperatures. The products are described as draft blockers for an inactive fireplace, not as replacement doors, screens, or fire-safety equipment.
Which size is best for a larger fireplace?
Among these options, the 39-by-32-inch whumsdog and UQM covers have the largest listed dimensions, and the PAWBOSE product is also listed at 39 by 32 inches. This does not mean they will fit every large fireplace. Measure your specific opening and verify magnetic attachment before choosing. For a shorter opening, compare the whumsdog 36-by-27-inch and 36-by-30-inch sizes.
Frequently Asked Questions
Do magnetic fireplace covers fit every fireplace?
No. They need both suitable dimensions and a frame that attracts magnets. Measure the opening and test the frame before purchasing.
Can a magnetic draft cover help reduce drafts?
These products are designed to block unwanted airflow through an unused fireplace or vent. How well one fits depends on the opening, frame, and magnetic contact.
Can I use a magnetic cover in summer?
The listed blanket-style covers are described for year-round use, including limiting hot-air entry and loss of cooled indoor air. Remove the cover before using the fireplace.
Are the Flehomo vent stoppers the same as a fireplace blanket?
No. Flehomo lists two 36-by-6-inch magnetic pieces for fireplace vents. The blanket-style covers are intended for larger fireplace openings.
What should I do if my fireplace frame is not magnetic?
Do not rely on a magnetic cover to attach to a nonmagnetic surface. Look for a draft-blocking option designed for your frame and installation situation, and follow the fireplace manufacturer’s guidance.