whumsdog Magnetic Fireplace Cover 42"x32" — Black Flame‑Retardant Draft Blocker with Built‑In Magnets

whumsdog Magnetic Fireplace Cover 42"x32" is a thick, flame-retardant draft blocker with built-in magnets that seals your cold or hot fireplace opening to reduce drafts, odors, and energy loss.

This magnetic fireplace blanket is designed to attach directly to metal-framed fireplaces and wood stoves, creating an insulated barrier when the hearth is not in use. Constructed from flame-retardant oxford cloth and a resilient sponge core, the cover lays flat across the opening and stays put thanks to a ring of powerful magnets around its edge. It arrives vacuum-packed in multiple size options and regains its loft after airing for a day.

How does the magnetic seal stay attached to the fireplace?

The cover uses a series of twelve high-strength magnets sewn into the perimeter so it clings to iron-, nickel-, or cobalt-containing metal frames. When aligned, the magnets draw the blanket snug against the frame to form a continuous barrier that resists drafts.

• Twelve magnets positioned around the edge for even hold
• Each magnet rated for strong suction — designed to resist slipping
• Black trim and fabric blend with many fireplace interiors for low visibility
• Magnets should not be exposed to high heat for prolonged periods

What materials and construction improve insulation?

The outer layer is a durable, flame-retardant oxford fabric that stands up to repeated handling and storage. Inside, a thick sponge filling coupled with a quilted stitch pattern prevents shifting and increases thermal resistance.

• Flame-retardant oxford cloth exterior for safety and durability
• Padded sponge core for thickness and insulating performance
• Stitching pattern keeps the filling evenly distributed
• Black finish minimizes noticeable contrast with hearth surrounds

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

Installation is simple: place the protruding magnet edge next to your metal frame and let the magnets pull the blanket into place. Fold the cover for compact storage when not needed and air it for 24 hours after unboxing to restore fullness.

• Align magnetic edge with metal fireplace frame for automatic attachment
• Allow 24 hours after unpacking for the padding to expand fully
• Fold flat for compact storage; keep away from open flame and high heat
• Follow included manual for size selection and safe use tips

Which fireplace sizes does this product fit and what should I check before buying?

The whumsdog magnetic cover is sold in multiple sizes, including the 42"x32" model, so you can match it to your hearth opening. Check that your fireplace frame contains ferrous metal (iron, nickel, or cobalt) because the magnets will only adhere to those metals.

• Available sizes listed in the package details—measure your opening before ordering
• Magnetic attachment works only on metal frames with iron, cobalt, or nickel
• Do not place magnets in direct contact with active flames or extremely hot surfaces
• Recommended use only after embers are fully extinguished

Who is this for: Homeowners and renters who want a practical, non-permanent way to block drafts, reduce odors, and limit heat loss through a dormant fireplace. It’s ideal for people seeking an easy-to-install, removable solution that tucks away when not in use and for anyone looking to add a simple layer of insulation without modifying the fireplace. If your firebox has a metal frame with magnetic metals and you want a discreet, reusable barrier, the whumsdog 42"x32" magnetic fireplace cover is a straightforward option.