Best Seller | Minuteman International Fireplace Opening Draft Guard Cover - 40 x 32 in. Prevent unwanted air flow into your home with the Fireplace Opening Draft Guard Cover - 40 x 32 in. This guard cover will keep your room warm by blocking the flow of cold air through your chimney. The cover is ideal for shielding a chimney or fireplace... more | | $106.35 FREE shipping go to store |