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| Brand | Ruud_parts |
|---|---|
| Part Number | 42-101225-01 |
| Control Type | Pressure Switch |
| Pressure Switch Application | Air |
| Color | Black |
| Product Length/Depth | 9.2 " |
| Product Width | 3.1 " |
| Product Weight | 0.4 lb |
| Product Height | 2.7 " |
| Shipping Weight | 0.46 lb |
It is a safety device designed to monitor the air pressure created by the furnace's inducer motor. It ensures the motor is running at the correct speed and that the venting is properly flued. The switch is rated at 0.35 inches of water column ("W/C).