Duravent 03T B-vent Tee 3 Inches Double Wall

Product Description

The DURAVENT 03T is a double-wall B-vent tee fitting used in Category I gas appliance venting systems. It provides a branch connection point within the vent run and offers built-in cleanout access for routine maintenance. The 3-inch diameter double-wall construction contains flue gases safely while maintaining the required clearance-to-combustibles performance expected of listed B-vent components. Licensed gas technicians and HVAC installers work with this fitting during new installations and vent system modifications on natural gas and propane appliances.

This tee fitting is suited for residential and light commercial venting applications where a Category I gas appliance requires a branching connection or a serviceable cleanout point. Typical applications include furnaces, water heaters, boilers, and other Category I appliances vented through Type B double-wall vent pipe systems. It supports both horizontal and vertical vent configurations within a compliant venting layout.

Key Features

• 3-inch diameter double-wall construction for Category I gas appliance venting
• Tee configuration allows horizontal or vertical branch connections within the vent system
• Provides cleanout access point for vent system maintenance
• Double-wall design maintains safe flue gas containment and required clearances
• Compatible with standard B-vent system components in the same diameter

Compatibility

Designed as an OEM-style replacement and new-installation fitting for Type B double-wall gas vent systems serving Category I gas appliances.

Installation Notes

Installation must be performed by a qualified HVAC technician or licensed gas contractor in accordance with the appliance manufacturer instructions, NFPA 54 (National Fuel Gas Code), and local mechanical codes. Shut off the gas supply and allow the appliance to cool completely before servicing the vent system. Ensure all B-vent joints are properly engaged and secured per the manufacturer assembly requirements, and verify that required clearances to combustibles are maintained throughout the run.

Technical Specifications

• Vent Diameter: 3 inches
• Construction: Double wall
• Vent Type: Type B (B-Vent)
• Application: Category I gas appliance venting

Standard Information

• Brand: DURAVENT
• Manufacturer Part Number: 03T