421.5 W/m²·K = 74.2305 BTU/hr·ft²·°F
| W/m²·K | BTU/hr·ft²·°F |
|---|---|
| 406.5 W/m²·K | 71.5888 |
| 411.5 W/m²·K | 72.4694 |
| 416.5 W/m²·K | 73.3499 |
| 421.5 | 74.2305 |
| 426.5 W/m²·K | 75.111 |
| 431.5 W/m²·K | 75.9916 |
| 436.5 W/m²·K | 76.8721 |
421.5 W/m²·K = 74.2305 BTU/hr·ft²·°F
1 W/(m²·K) = 0.176110 BTU/(hr·ft²·°F) · 1 BTU/(hr·ft²·°F) = 5.67826 W/(m²·K)