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| Installation | |
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Additional duct lengths (4" rigid pipe only) |
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Type of bend |
| Radius | Additional duct length | |||||||
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| ft |
| cm | ft |
| cm |
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Flexible metal duct |
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– 3’ 3" (1 m) straight |
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| 5’ 11" |
| 180 | ||||
– 45° angle |
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| 10" |
| 25 | 4’ 11" |
| 150 | ||
– 90° angle |
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| 10" |
| 25 | 8’ 2" |
| 250 | ||
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Smooth metal duct |
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– 3’ 3" (1 m) straight |
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| 3’ 3" |
| 100 | ||||
– 45° angle |
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| 10" |
| 25 | 1’ 11" |
| 60 |
– 90° angle |
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| 10" |
| 25 | 2’ 7" |
| 80 |
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Elbow 90° sharp |
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| 7’ 6" |
| 230 | |
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Concertina bend |
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– 90° angle |
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| 8" |
| 20 | 2’ 4" |
| 70 | ||
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Wall vent or window vent |
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– with louvers |
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| 12’ 5" |
| 380 | ||||
– with flap |
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| 4’ 11" |
| 150 | ||||
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Exhaust connection |
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– left or right side |
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| 3’ 3" |
| 100 | ||||
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