![Lennox 20J91 Flame Sensor specifications — New England Supply House [NESH-SPECTABLE-V1]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-20j91-specs.png?v=1794089112&width=1445)
This Lennox 20J91 is a flame sensor that detects burner flame presence and signals the ignition control to keep the gas valve open during furnace operation.
Confirm this part number against your equipment's parts list before ordering.
Specifications
| Part Number | 20J91 |
|---|---|
| Brand | Lennox |
| Type | Flame Sensor |