This L290F reset thermal switch operates as a secondary high-limit safety

As a seasoned tech

Excessive heat cycles from poor airflow can cause the internal bimetal disc to lose calibration or the contacts to pit over time

12" insertion length

it acts as a permanent fail-safe to prevent catastrophic damage to motors

Reznor 68005 Fan Blade This L290F reset thermal switchThe Reznor 68005 is a critical OEM replacement fan blade designed specifically for Reznor HVAC equipment, including FT and SFT series unit heaters. This component features a 2 inch diameter with a 10 blade configuration, engineered to maintain the precise static pressure required for optimal combustion and venting. With a 1 4" bore and clockwise (CW rotation) orientation, it serves as a direct fit solution for venter motor assemblies, ensuring