![Lennox 21L89 Limit Switch, 210-240°F specifications — New England Supply House [NESH-SPECTABLE-V1]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-21l89-specs.png?v=1794089999&width=1445)
The Lennox 21L89 is an auto-reset limit switch rated 210-240°F with a 3 in. insert length. It monitors plenum temperature and shuts down the burner if the furnace overheats, resetting automatically once temperatures return to normal. It is a genuine Lennox replacement part. Confirm this part number against your equipment's parts list before ordering.
Specifications
| Part Number | 21L89 |
|---|---|
| Brand | Lennox |
| Type | Limit Switch |
| Temperature Rating | 210-240°F |
| Reset Type | Auto Reset |
| Insert Length | 3 in. |