420 W/m²·K = 73.9663 BTU/hr·ft²·°F
| W/m²·K | BTU/hr·ft²·°F |
|---|---|
| 405 W/m²·K | 71.3247 |
| 410 W/m²·K | 72.2052 |
| 415 W/m²·K | 73.0858 |
| 420 | 73.9663 |
| 425 W/m²·K | 74.8469 |
| 430 W/m²·K | 75.7274 |
| 435 W/m²·K | 76.608 |
420 W/m²·K = 73.9663 BTU/hr·ft²·°F
1 W/(m²·K) = 0.176110 BTU/(hr·ft²·°F) · 1 BTU/(hr·ft²·°F) = 5.67826 W/(m²·K)