![Lennox 21L99 Flame Sensor specifications — New England Supply House [NESH-SPECTABLE-V1]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-21l99-specs.png?v=1794088694&width=1445)
This Lennox 21L99 flame sensor is a genuine Lennox replacement part that detects the presence of burner flame and signals the control board to keep the gas valve open during normal operation, shutting off gas flow if the flame is lost. Confirm the part number against your equipment's parts list before ordering.
Specifications
| Part Number | 21L99 |
|---|---|
| Brand | Lennox |
| Type | Flame Sensor |