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Duct pieces:
3-1/4" x 10" Rect.,
straight
7" Round, straight
8" Round, straight
3-1/4" x 10" Rect.
90° elbow
3-1/4" x 10" Rect.
45° elbow
3-1/4" x 10" Rect.
90° flat elbow
3-1/4" x 10" Rect. wall
cap with dramper
3-1/4" x 10" Rect.
to 6" round transition
3-1/4" x 10" Rect.
to 6" round transition
90° elbow
6" Round, 90° elbow
6" Round, 45° elbow
Subtotal column 2 =
Subtotal column 1 =
Total Ductwork =
- Maximum Duct Length:
For satisfactory air movement, the total duct length should not exceed 100
equivalent feet.
Equivalent number length x used:
1 Ft.
1 Ft.
1 Ft.
15 Ft.
9 Ft.
24 Ft.
30 Ft.
5 Ft.
20 Ft.
15 Ft.
9 Ft.
- 9 -
x (
)=
x (
)=
x (
)=
x (
)=
x (
)=
x (
)=
x (
)=
x (
)=
x (
)=
x (
)=
x (
)=
Total:
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
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