| All returns accepted | ReturnsNotAccepted |
|---|---|
| Power Source | NAP |
| MPN | C3-42 |
| Battery Size | NAP |
| Compatible Product | Robertshaw 21-939 C4-42 |
| Smart Home Compatibility | NAP |
| Control Style | Cover Only |
| Unit Type | Unit |
| Display Size | 1.97 in (5 cm) |
| Voltage | NAP |
| Heat Stages | 1 |
| Unit Quantity | 1 |
| Thermostat Programmable Days | NAP |
| Compatible Brand | Robertshaw 21-939 C4-42 |
| Color | Silver |
| Compatible Model | Robertshaw 21-939 C4-42 |
| Material | Aluminum |
| Brand | Robertshaw |
| Thermostat Shape | Rectangular |
| Mounting | Wall-Mounted |
| Sensor Technology | Cover Only |
| Voltage Type | Low Voltage |
| Number of Periods per Programmable Day | 0 |
| Model | Robertshaw 21-939 C4-42 |
| System Switching | Cover Only |
| Cool Stages | NAP |
| Smart Home Protocol | NAP |
| Programmability | Non-Programmable |
Check the listing for details. Robertshaw 21-939 Thermostat Cover C4-42. Color: Silver, Condition: New. Listed at 18.72 USD. Robertshaw 21-939 Thermostat Cover C4-42 - we have 1 of these thermostat covers available with Free Shipping.