whumsdog Magnetic Fireplace Cover 43x36 in Draft Blocker with 12 Magnets, Flame‑Retardant Insulation

The whumsdog Magnetic Fireplace Cover is a thick, flame‑retardant oxford cloth blanket with twelve built‑in magnets that attaches to metal fireplace frames to block drafts, odors and debris.

This magnetic fireplace blocker is designed to form a tight seal against iron‑containing fireplace frames, reducing unwanted air exchange when the hearth is not in use. Filled with dense foam and stitched to keep the interior stable, the cover offers a simple, non‑permanent way to reduce heat loss in winter and keep cooled air inside during summer. It ships vacuum‑packed and expands after 24 hours in ventilated air.

How does this cover attach and stay in place?

Attachment is purely magnetic: twelve powerful magnets are sewn into the perimeter of the blanket so it clings to metal frames that contain iron, cobalt or nickel. No tools, hooks or adhesive are needed, which makes installation quick and reversible.

• Twelve built‑in magnets with strong suction force (each up to 1.2 T).
• Magnets adhere only to metal frames with ferrous elements.
• Place the magnet edge against the frame and smooth the blanket flat for best seal.

What materials and construction make it effective?

The cover uses flame‑retardant oxford cloth on the outside and high‑density foam inside to slow air movement and provide insulation. Stitching is designed to prevent the filling from shifting, preserving consistent thickness and coverage across the blanket.

• Outer: thickened flame‑retardant oxford fabric for safety and durability.
• Inner: high‑quality sponge foam for thermal resistance and shape retention.
• Split stitching secures the filling, minimizing gaps and sagging.

Will this save energy and reduce drafts in my home?

By blocking open hearths when not in use, the magnetic cover helps limit heat loss in winter and prevents cooled air from escaping in summer. While it’s not an HVAC retrofit, many homeowners see reduced draft sensations and steadier indoor temperatures after installing a proper fireplace seal.

• Reduces air exchange through the fireplace opening.
• Helps maintain indoor temperature, easing heating or cooling load.
• Also helps block odors, soot, and small debris from entering the room.

How do I install, care for, and store the cover?

Installation is straightforward as the magnets snap to compatible metal frames—place, press gently, and smooth. To preserve magnet strength, avoid placing the magnets in high‑temperature environments; use the blanket only after the fire is fully extinguished and cool. The cover folds compactly for storage when not in use.

• Install only when fireplace is fully cool to protect magnets.
• Vacuum‑packed for shipping; open and air for 24 hours to regain thickness.
• Fold and store in a dry place; no special tools required for removal.

Who is this for? The whumsdog Magnetic Fireplace Cover is ideal for homeowners or renters with metal‑framed fireplaces who want a non‑permanent, fabric‑based solution to reduce drafts, odors and debris when the hearth is unused. It suits those seeking easy installation, packable storage, and a discreet black blanket that blends with most fireplace surrounds. Note that it must be used only on metal frames containing ferrous elements and should not be exposed to high heat while the magnets are in direct contact with hot surfaces.