4" Dia (102 mm)
Number of 90˚
elbows/bends
0
1
2
3
4
Acceptable 2 ½" (64 mm) Hood (for short length installations)
Number of 90˚
elbows/bends
0
1
2
3
4
Installation instructions
Preferred 4" (102 mm) Hoods
4" Dia (102 mm)
4" (102 mm)
When you have a 4" (102 mm) Hood
Maximum length of 4" (102 mm) diameter metal duct.
Rigid metal
90 ft
27.4 m
60 ft
18.3 m
45 ft
13.7 m
35 ft
10.7 m
25 ft
7.6 m
4" Dia (102 mm)
2 ½" (64 mm)
When you have a 2 ½" (64 mm) Hood
Maximum length of 4" (102 mm) diameter metal duct.
Rigid
60 ft
18.3 m
45 ft
13.7 m
35 ft
10.7 m
25 ft
7.6 m
15 ft
4.6 m
Flexible metal
(fully extended)
8 ft
2.4 m
8 ft
2.4 m
8 ft
2.4 m
8 ft
2.4 m
8 ft
2.4 m
Flexible Metal
(fully extended)
8 ft
2.4 m
8 ft
2.4 m
8 ft
2.4 m
8 ft
2.4 m
8 ft
2.4 m
33
CA
(EN)