Rinnai Flue (B) 9 1/2"-15 3/4", All DV Furnances

The Rinnai Flue B Extension Pipe, part number FOT-152, is an OEM direct vent flue extension designed to extend the exhaust and air intake system length, ensuring proper vent termination and airflow alignment for compatible Rinnai direct vent wall furnaces.

What’s included: One (1) Rinnai flue B extension pipe.

Installation limits: Designed for use only with approved Rinnai direct vent furnace systems; installation must follow Rinnai venting instructions, length limitations, and local code requirements.

Compatibility: Compatible with all Rinnai direct vent wall furnace models requiring a 9-1/2" to 15-3/4" flue extension.

• OEM Rinnai direct vent flue extension
• Adjustable length from 9-1/2" to 15-3/4"
• Supports proper exhaust and combustion air routing
• Designed for sealed direct vent furnace systems
• Durable construction for long-term venting performance
• Direct-fit compatibility with Rinnai DV furnaces

Proper vent extension selection is essential to maintain correct draft, combustion airflow, and safe furnace operation.