National Chimney Insert Boot

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National Chimney Insert Boot The National Chimney Insert Boot is a durable stainless steel insert adapter designed to create a secure connection between a chimney liner and firepla ce insert exhaust vent. Manufactured from premium 24-gauge 304 stainless steel, it offers excellent corrosion resistance, strength, and long-term performance for chimney relining and venting applications. Engineered for compatibility with most fireplace inserts, this chimney insert boot easily attaches to rigid pipe or flexible chimney liner systems using a coupler. Ideal for wood, pellet, and other insert installations, it provides a reliable transition point that helps ensure safe, efficient exhaust venting and professional-grade chimney system performance. Warranty Limited Lifetime Warranty Show more