DuraVent DuraChimney II 16" Firestop

The DuraVent DuraChimney II 16" Firestop is a high-performance factory-built chimney system component designed for safe installation in wood-burning fireplaces, stoves, and solid-fuel venting applications. As part of the trusted DuraChimney II UL 103 listed double-wall chimney system, this firestop helps maintain proper clearance and fire safety where the chimney passes through ceilings or floors. Its lightweight, unitized design eliminates the need for field assembly of pipe sections, allowing for faster and more efficient installation in residential and commercial chimney systems.

Engineered for maximum fire safety and durability, the DuraChimney II firestop features a double-wall, air-cooled design that helps keep exterior surfaces cooler while ensuring strong internal draft performance. The system accommodates both radial and longitudinal thermal expansion under extreme temperatures, maintaining long-term structural integrity. UL 103 listed, DuraChimney II is tested for continuous operation at 1000°F, one hour at 1400°F, and ten minutes at 1700°F, delivering reliable, code-compliant chimney protection and enhanced safety for every installation.

Features

• DuraVent DuraChimney II 16" Firestop – Essential Chimney Safety Component: Designed for the DuraChimney II factory-built double-wall chimney system, ideal for wood-burning fireplaces, stoves, and solid-fuel venting installations.
• Critical Ceiling and Floor Penetration Protection: Used in ceiling and floor penetrations above the fireplace, providing essential fire safety where the chimney passes through building structures.
• Underside Ceiling Installation Design: Engineered to fit securely on the underside of the ceiling, ensuring proper alignment and compliance with chimney system installation requirements.
• Supports UL-Listed Chimney System Safety: Helps maintain safe clearances and supports compliance with UL 103 listed chimney system standards for residential and commercial installations.
• Roof Penetration Not Required: A firestop is not required when passing through the roof, simplifying installation planning for multi-level chimney runs.
• Improves Fire Safety & Structural Protection: Helps prevent heat transfer to surrounding framing materials, enhancing overall chimney fire safety and building protection.

Specifications