491 W/m²·K = 86.4702 BTU/hr·ft²·°F
| W/m²·K | BTU/hr·ft²·°F |
|---|---|
| 476 W/m²·K | 83.8285 |
| 481 W/m²·K | 84.709 |
| 486 W/m²·K | 85.5896 |
| 491 | 86.4702 |
| 496 W/m²·K | 87.3507 |
| 501 W/m²·K | 88.2313 |
| 506 W/m²·K | 89.1118 |
491 W/m²·K = 86.4702 BTU/hr·ft²·°F
1 W/(m²·K) = 0.176110 BTU/(hr·ft²·°F) · 1 BTU/(hr·ft²·°F) = 5.67826 W/(m²·K)