Has anyone ever made a fireplace blanket?

Fireplace Blocker 36-Inch H x 48-Inch W Blanket, Large : Home & Kitchen

Place this fire-resistant blanket over the outside of your fire screen at night to keep warm air in and to block out the cold. It conserves energy and saves money by reducing the heat loss that escapes up your chimney after a wood burning fire. Made from Pavenex, a fire-resistant carbon fiber material. Heavy-duty magnets attach it to your metal screen. Made in USA.

Plow & Hearth Medium Pavenex Fireplace Blanket, Black

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Fire Blanket - Oberon Company

🌞【High-Quality】Our fireplace blanket blockers are made of high-density thickened oxford fabric, the inner layer is filled with double-layer cotton

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