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Additional duct lengths (4" [100 mm] rigid pipe only)
Type of bend
Flexible metal duct
– 3' 3" (1 m) straight
– 45° angle
– 90° angle
Smooth metal duct
– 3' 3" (1 m) straight
– 45° angle
– 90° angle
Elbow 90° sharp
– 90° angle
Concertina bend
Wall vent or
window vent
– with louvers
– with flap
Exhaust connection
– left or right side
Installing the ducting
Radius
ft
cm
10"
25
10"
25
8"
20
Additional duct
lengt
ft
cm
5' 11"
180
4' 11"
150
8' 2"
250
3' 3"
100
1' 11"
60
2' 7"
80
7' 6"
230
2' 4"
70
12' 5"
380
4' 11"
150
3' 3"
100
67
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