This DuraVent DuraPlus Triple-Wall Chimney Cap protects against dangerous sparks, helps prevent rain from entering the chimney and features two insulating layers consisting of a ceramic blanket plus air space. The triple-wall chimney cap includes ceramic blanket insulation that's held securely in position, eliminating hot spots common with loose-fill type insulations. In the event of a creosote fire, the chimney cap compressible blanket insulation permits the chimney liner to expand outwardly in a radial direction.

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