Example 1
6" Wall Cap
Duct Fitting Number
Equivalent
Length
5" to 6"
Transition
1
6" Straight
1
6" Elbow
5
6" Wall Cap
28
18
INSTALLATION INSTRUCTIONS
5" to 6" Transition
2' of 6" Round
6" Elbow
4' of 6" Round
6" Elbow
6' of 6" Round
Total
of Fittings
Equivalent
Length of
Fittings
1
1
2+4+6=12
12
2
10
1
28
Total
51
(continued)
Example 2
"x10" Transition
6" to 3
1
⁄
4
"x10" Straight
10' of 3
1
⁄
4
Duct Fitting Number
Equivalent
Length
5" to 6"
Transition
6" Straight
6" Elbow
6" to
"x10"
3
1
⁄
4
Transition
"x10"
3
1
⁄
4
Straight
"x10"
3
1
⁄
4
Wall Cap
5" to 6" Transition
2' of 6" Round
6" Elbow
4' of 6" Round
6" Elbow
6' of 6" Round
6" Elbow
4' of 6" Round
"x10" Wall Cap
3
⁄
1
4
of Fittings
1
1
1
2+4+6+4=16
5
3
1
1
1
10
20
1
Total
Total
Equivalent
Length of
Fittings
1
16
15
1
10
20
63