| conditioned space | 0.57 |
| the attic | 0.56 |
| crawlspace | 0.55 |
| garage | 0.39 |
| building thermal envelo… | 0.27 |
| unconditioned spaces | 0.25 |
| run through the attic | 0.51 |
| carry air | 0.49 |
| deliver ventilation air | 0.46 |
| draw air | 0.44 |
| run through crawlspace | 0.42 |
| become blocked | 0.41 |
| use same strapping meth… | 0.38 |
| remain open | 0.37 |
| drain the liver | 0.37 |
| carry bile | 0.36 |
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| metal | 0.54 |
| fiberglas | 0.51 |
| sheet metal | 0.51 |
| other materials | 0.49 |
| plastic | 0.27 |
| a number of different p… | 0.25 |
| galvanized steel | 0.25 |