Loading ...
Loading ...
Loading ...
www.insigniaproducts.com
8
Equivalent duct length table
To calculate your equivalent duct length:
1 Write the number of sections used for each of the duct pieces.
2 Multiply the number used by the equivalent length for each duct piece.
3 Add the total equivalent lengths together. This number must be less than 140 ft.
Duct Pieces Equivalent
Length
× Number Used = Total
Equivalent
Length
5 ft. × ( ) = ft.
40 ft. × ( ) = ft.
10 ft. × ( ) = ft.
5 ft. × ( ) = ft.
25 ft. × ( ) = ft.
5 ft. × ( ) = ft.
24 ft. × ( ) = ft.
1 ft. × ( ) = ft.
Total ductwork =
ft.
(For proper airflow, this
number should not
exceed 140 ft.)
Rectangular-to-
round transition
adapter
Wall cap
90° elbow
45° elbow
90° elbow
45° elbow
Roof cap
Straight duct 6” round
OR
3-1/4” × 10” rectangular
Loading ...
Loading ...
Loading ...