Rinnai FOT-221 Vent Extension Kit 60–80″ for EX17 EX22 Direct Vent Heaters

The Rinnai FOT-221 Vent Extension Kit provides a safe, OEM-approved solution for extending the venting system of Rinnai EX17 and EX22 Direct Vent Wall Heaters. This kit includes both flexible and rigid vent components, allowing installers to extend vent length from 60 inches up to 80 inches, ideal for thicker walls or challenging through-wall installations.Designed exclusively for the Rinnai EX-series, this kit ensures proper combustion air intake and exhaust venting performance. All components are engineered to maintain air-tight integrity and safe, compliant operation in direct-vent heating systems.This kit is commonly used by HVAC installers and service professionals to adapt installations where standard vent lengths are insufficient.Key Benefits:• Provides 60″ to 80″ venting extension• OEM Rinnai kit ensures perfect fit and safe operation• Compatible only with EX17 and EX22 wall heater models• Includes all required vent sections and connector hardware• Supports efficient and compliant direct vent heater operationIdeal For:• Rinnai EX heater installations• Thick-wall installations requiring extended vent length• Replacement of worn or damaged vent components• HVAC contractors and heater service techniciansThis OEM Rinnai vent extension kit ensures that your direct vent heater operates safely and efficiently while meeting installation requirements.

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