The Midtherm Washer Storm Collar Black Twin Wall Flue is purpose-built to protect exposed chimney sections from rain and moisture, forming a dependable weather barrier at the point where the flue passes through roofing materials. Designed for installation above the flashing plate, it compresses securely around the pipe to block water from tracking down the outer skin. This black powder-coated finish not only enhances the visual look of the system but also provides an added layer of exterior protection.
Its structure creates a consistent seal when paired with a bead of silicone mastic, delivering full weather resistance even in challenging environments. By preventing water penetration, the collar helps maintain the internal insulation’s performance and supports the durability of the entire twin wall system. This makes it a practical and essential component for maintaining system integrity over time.
As part of the Midtherm HT-S high-temperature range, the black storm collar reflects strong build quality and the same engineering precision found throughout the product line. Manufactured from high-grade stainless steel, compatible with a wide range of fuels, and fully certified to industry standards, it fits seamlessly into domestic and commercial installations. With a long-term warranty and a design focused on real-world conditions, it offers a reliable, weather-resistant solution for any outdoor flue setup.
Features and Benefits
- Black powder-coated stainless steel for weather resilience
- Forms a watertight seal above flashing
- Stable performance up to 450°C
- Laser-welded seams for structural strength
- Simple, secure clamping for exact installation
- Compatible with wood, gas, oil, biomass, and pellet systems
- ISO 9001 and CE certified
- Integrates with all HT-S Twin Wall components
- Designed for prolonged exterior exposure
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