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The CENTROTHERM isvl026-25 is a single-wall polypropylene vent length designed for high-efficiency condensing appliance venting systems. Constructed from UL 1738 and ULC S636 listed polypropylene, it handles flue gas temperatures up to 230 degrees F (110 degrees C). At 2 inches in diameter and 72 inches in length, this vent section is a core component in a complete InnoFlue venting system. The long socket end simplifies connections and creates a secure, airtight joint without the need for glues, primers, or solvents. Licensed HVAC technicians and mechanical contractors install this component as part of new construction or retrofit condensing furnace and boiler venting runs.
This vent length is suited for residential and light commercial applications using high-efficiency condensing equipment that requires a Category IV venting solution. The polypropylene construction resists the acidic condensate produced by condensing furnaces and boilers. The thin-wall, lightweight design allows for faster installation compared to PVC or CPVC alternatives. Its integrated gasket system provides a reliable airtight seal at each joint, reducing labor time and eliminating the chemical handling associated with solvent-cemented plastic vent systems.
Designed for use within the InnoFlue single-wall polypropylene vent system for Category IV condensing furnaces and boilers requiring 2-inch diameter venting.
Installation should be performed by a licensed HVAC technician or mechanical contractor in accordance with the appliance manufacturer instructions and applicable local mechanical codes. Shut down and de-energize the connected appliance before beginning any vent system work. No glues, primers, or solvents are required or recommended for joint assembly on this system. Verify proper support spacing, slope back to the appliance, and joint seating per the InnoFlue installation guide before restoring appliance operation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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