439 W/m²·K = 77.3124 BTU/hr·ft²·°F
| W/m²·K | BTU/hr·ft²·°F |
|---|---|
| 424 W/m²·K | 74.6708 |
| 429 W/m²·K | 75.5513 |
| 434 W/m²·K | 76.4319 |
| 439 | 77.3124 |
| 444 W/m²·K | 78.193 |
| 449 W/m²·K | 79.0735 |
| 454 W/m²·K | 79.9541 |
439 W/m²·K = 77.3124 BTU/hr·ft²·°F
1 W/(m²·K) = 0.176110 BTU/(hr·ft²·°F) · 1 BTU/(hr·ft²·°F) = 5.67826 W/(m²·K)