Duravent 0405PI B-vent Round Rigid Pipe 4x60 in Double Wall

Product Description

The DURAVENT 0405PI is a double-wall, round rigid B-vent pipe section designed for extended vent runs in residential and light-commercial gas appliance systems. At 4 inches in diameter and 60 inches in length, this pipe section covers longer straight runs while maintaining flue gas temperature through its double-wall construction. The outer wall keeps clearance-to-combustibles requirements manageable, and the inner wall retains heat to sustain proper draft. Licensed gas fitters and HVAC technicians install this pipe when venting Category I gas appliances such as furnaces, boilers, and water heaters through interior chase or attic runs.

This pipe section is suited for residential and light-commercial installations where Category I gas appliances require a listed Type B vent system. Its 60-inch length reduces the number of joints needed on straight vertical or horizontal vent runs, which simplifies installation and limits potential leak points. Twist-lock connections secure each section to fittings, elbows, and other DVP system components.

Key Features

• Double-wall construction maintains flue gas temperature and supports proper draft
• 4-inch diameter x 60-inch length covers extended straight vent runs with fewer joints
• Twist-lock connection system for secure, tool-free assembly with compatible DVP components
• Round rigid design for straightforward routing through interior chases and attic spaces
• Listed for Category I gas appliance venting applications

Compatibility

Designed as an OEM-style replacement and standard component for Type B double-wall vent systems venting Category I gas appliances.

Installation Notes

Installation must be performed by a licensed gas fitter or HVAC technician in accordance with the International Fuel Gas Code (IFGC) and the appliance manufacturer's venting instructions. Shut off the gas supply and allow the appliance to cool completely before servicing or extending any vent system. Maintain all required clearances to combustibles as specified by the vent system listing. Do not mix DVP components with unlisted or incompatible vent pipe from other systems.

Technical Specifications

• Diameter: 4 inches
• Length: 60 inches
• Wall Construction: Double wall
• Pipe Shape: Round
• Pipe Style: Rigid
• Vent Category: Category I (Type B)
• Connection Type: Twist-lock

Standard Information

• Brand: DURAVENT
• Manufacturer Part Number: 0405PI