Filter
Top Products
9
www.zephyronline.com
Installation - Ductwork Calculation Sheet
3 1/4 x 10
Rect.,
straight
6 Round,,
straight
7", 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 damper
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
1 Ft. x ( ) =
1 Ft. x ( ) =
1 Ft. x ( ) =
15 Ft. x ( ) =
9 Ft. x ( ) =
24 Ft. x ( ) =
30 Ft. x ( ) =
5 Ft. x ( ) =
15 Ft. x ( ) =
15 Ft. x ( ) =
9 Ft. x ( ) =
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
6" Round
wall cap
with damper
6 Round,
roof cap
6 Round to
3 1/4 x 10
rect.
transition
6 Round to
3 1/4 x 10
rect.
transition
90° elbow
7", 8" round
90° elbow
7", 8" round
45° elbow
7", 8" Round
wall cap
with damper
7", 8"
Round,
roof cap
7 Round to
3 1/4 x 10
rect.
transition
6 Round to
3 1/4 x 10
rect.
transition
90° elbow
30 Ft. x ( ) =
30 Ft. x ( ) =
1 Ft. x ( ) =
16 Ft. x ( ) =
15 Ft. x ( ) =
9 Ft. x ( ) =
30 Ft. x ( ) =
30 Ft. x ( ) =
8 Ft. x ( ) =
15 Ft. x ( ) =
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Ft.
Duct pieces Equivalent number
lenght x used = Total
Duct pieces Equivalent number
lenght x used = Total
Subtotal column 2 =
Subtotal column 2 =
Total ductwork =
Subtotal column 1 =
Maximum Duct Length: For satisfactory air movement, the total
duct length should not exceed 100 equivalent feet.