Fireplace door insulation allows you to fill in the spaces between your door frame and the surrounding surface. Our black or white fiberglass insulation is available in widths of 1.5 or 2 inches, and is available in 10 or 11 foot rolls. Use the entire length, or cut to size for smaller gaps. Our fireplace insert insulation is an easy-to-use, self-adhesive brand that forms a smoke-tight gasket between the door frame and your facing material. Give us a call at 1-877-373-6677 with any questions you may have!