Centrotherm isvl021-25 Vent Length 2 Inches Single Wall

Product Description

The CENTROTHERM isvl021-25 is a single-wall polypropylene vent length designed for high-efficiency condensing appliance venting systems. Constructed from UL1738 and ULCS636 listed polypropylene, this 2-inch diameter by 12-inch vent length handles flue gas temperatures up to 230 degrees F. The integrated gasket creates an airtight seal without glues, primers, or solvents, reducing installation time and eliminating solvent-related jobsite hazards. Licensed HVAC technicians and mechanical contractors install this component as part of the InnoFlue system in residential and light commercial applications.

This vent length is a core component of the InnoFlue single-wall polypropylene vent system, suited for condensing gas furnaces, boilers, and water heaters that require a Listed venting solution. The long-socket end connection ensures a secure, sealed joint between segments. Its thin-wall, lightweight construction simplifies handling in tight mechanical rooms and during rooftop or sidewall termination runs.

Key Features

• Evaluated to UL1738 and ULCS636 by ICC for Listed polypropylene venting
• Rated for flue gas temperatures up to 230 degrees F (110 degrees C)
• Integrated gasket provides airtight seal with no glues, primers, or solvents required
• Thin-wall, lightweight polypropylene construction for easy handling and installation
• Long-socket end design for secure segment-to-segment connection

Compatibility

Designed as an OEM-style component for use within the InnoFlue single-wall polypropylene vent system on high-efficiency condensing appliances requiring UL1738 or ULCS636 Listed venting.

Installation Notes

Installation should be performed by a licensed HVAC technician or mechanical contractor in accordance with the appliance manufacturer instructions and applicable mechanical codes. Shut down and de-energize the appliance before servicing or modifying any vent connection. No glues, primers, or solvents are required; the integrated gasket provides the seal when segments are fully seated. Verify all joints are fully engaged and inspect for flue gas leaks after restoring appliance operation.

Technical Specifications

• Diameter: 2 inches
• Length: 12 inches
• Wall Type: Single Wall
• Material: Polypropylene
• Max Flue Gas Temperature: 230 degrees F (110 degrees C)
• Listings: UL1738 and ULCS636, evaluated by ICC
• Connection Type: Long Socket with Integrated Gasket

Standard Information

• Brand: CENTROTHERM
• Manufacturer Part Number: isvl021-25