DuraVent DuraPlus 6" Stainless Steel Wall Thimble

The DuraVent DuraPlus 6" Stainless Steel Wall Thimble is a high-performance triple-wall chimney system component designed to safely pass chimney pipe through combustible walls in wood stove and all-fuel venting installations. Engineered with advanced ceramic blanket insulation and an air-space layer, this insulated wall thimble maintains a cool exterior while promoting a strong internal draft for improved stove efficiency. The secure insulation eliminates hot spots and enhances overall chimney venting safety, providing reliable protection for both the structure and the chimney system in residential heating applications.

Built for continuous operation at flue gas temperatures up to 1000°F, the DuraVent DuraPlus stainless steel wall thimble meets strict UL-listed chimney standards, including one hour at 1400°F and three 2100°F chimney fire tests. This durable chimney wall pass-through system ensures long-lasting fire-safe performance and dependable installation for modern chimney venting systems.

Features

• Adjustable Wall Thickness Design: Engineered for 6-inch DuraPlus triple-wall chimney systems, the stainless steel wall thimble adjusts from 4 3/4" to 7 3/4" wall thickness, fitting securely between standard wall studs for flexible chimney venting system installations.
• Expandable Telescoping Construction: Can be extended up to 16 inches with a field-fabricated extension, making it suitable for custom wood stove chimney wall pass-through applications and thicker wall installations.
• Required Horizontal Installation: Must be installed with DuraPlus chimney pipe running horizontally through the wall, extending at least 2 inches into the interior room for proper chimney safety and code compliance.
• Professional Interior Finish: Includes a black-painted interior trim ring for a clean, finished appearance in residential chimney installations and stove venting systems.
• Adapter Compatibility: Works with DVL and DuraBlack adapters, providing flexible integration for complete wood stove chimney and venting system setups.

Specification