Features: Fiberglass material gives the rope strong resistance to high temperatures, ensuring it won't easily deform or break when exposed to the heat from stoves or fireplaces. It also holds up well against regular use, keeping its shape and sealing ability over time. Specifications: Thickness: 12mm Length: 3 m Material: Fiberglass Color: Black Designed for use as a door gasket in wood stoves and fireplaces. Package Includes: 1 piece of fireplace seal rope.