DuraVent DuraTech 8" Black Square Trim Collar for Round Support Box

The DuraVent DuraTech 8" Black Square Trim Collar for Round Support Box is a premium chimney finishing accessory designed to conceal gaps around a DuraTech 8-inch chimney pipe installation. Ideal for use with wood stoves, fireplaces, furnaces, boilers, and all-fuel venting systems, this trim collar delivers a clean, professional ceiling finish while improving overall chimney system aesthetics and installation quality. It is engineered to integrate seamlessly with the DuraTech double-wall chimney system for safe and reliable performance.

Built with Thermal Tech blanket insulation encased between dual walls, the DuraTech system ensures cooler exterior temperatures while maintaining high flue gas efficiency for optimal draft performance. Its 25% thicker inner wall enhances durability and safety without locking bands or mechanical fasteners. Tested to strict UL 103HT standards, it withstands continuous operation at 1000°F, one hour at 1400°F, and three 2100°F chimney fire tests, ensuring long-lasting reliability and fire-safe performance.

Features

• Essential Chimney Finishing Accessory: The DuraVent DuraTech 8" Black Square Trim Collar for Round Support Box is designed to provide a clean, professional finish for DuraTech 8-inch chimney pipe installations.
• Conceals Installation Gaps: Effectively hides the gap between the round ceiling support box and the ceiling cutout, delivering a polished and seamless ceiling appearance.
• Enhances Chimney System Aesthetics: Improves the visual presentation of chimney venting systems, making it ideal for residential wood stove and fireplace installations.
• Compatible with DuraTech Systems: Specifically designed for use with DuraVent DuraTech chimney pipe systems, ensuring proper fit and system consistency.
• Durable Painted Finish: Finished in high-quality black paint, providing a sleek look that blends with most interior ceiling designs.
• Code-Compliant Installation Support: Helps complete a safe and professional chimney installation system with improved trim and finish details.

Specification

Downloads

• Typical Chimney Installations
• Product Catalog
• Product Installation Instructions