24
Installation Instructions
Example 2
Duct Fitting
Number
Total
Equivalent
of Fittings
Equivalent
Length
Length of
Fittings
5
″
to 6
″
Transition
1
1
1
6
″
Straight
1
2+4+6+4=16
16
6
″
Elbow
5
3
15
6
″
to
3
1
⁄
4
″
x 10
″
Transition
1
1
1
3
1
⁄
4
″
x 10
″
Straight
1
10
10
3
1
⁄
4
″
x 10
″
Wall Cap
20
1
20
Total
63
Example 1
Duct Fitting
Number
Total
Equivalent
of Fittings
Equivalent
Length
Length of
Fittings
5
″
to 6
″
Transition
1
1
1
6
″
Straight
1
2+4+6=12
12
6
″
Elbow
5
2
10
6
″
Wall Cap
28
1
28
Total
51
5
″
to 6
″
Transition
5
″
to 6
″
Transition
10 ft. of 3
1
⁄
4
″
x 10
″
Straight
6
″
to 3
1
⁄
4
″
x 10
″
Transition
2 ft. of 6
″
Round
2 ft. of 6
″
Round
6
″
Elbow
6
″
Elbow
6
″
Elbow
6
″
Elbow
6
″
Elbow
4 ft. of 6
″
Round
4 ft. of 6
″
Round
4 ft
.
of 6
″
Round
3
1
⁄
4
″
x 10
″
Wall Cap
6 ft. of 6
″
Round
6 ft. of 6
″
Round
6
″
Wall Cap