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6
EQUIVALENT DUCT LENGTH CHART
HJ0049
HA0086
HA0085
HJ0050
Broan Model 406
Straight Duct
6” round x 2’ long
Equivalent length
2 ft.
Broan Model 415
7” Round Elbow
Equivalent length
10 ft.
Sears Model 59581
3¼” x 10” to 6”
Round Transition
Equivalent length
5.5 ft.
Sears Model 59691
6” Round Wall Cap
Equivalent length
34 ft.
(6 ft. w/o damper)
Sears
Model 59091
Roof Cap
(accepts 7” round
or 3¼” x 10” duct)
Equivalent length
30 ft.
(7 ft. w/o damper)
Kenmore range hoods are designed to perform effi ciently when attached to long runs of duct. As a point of reference,
this hood will function at approximately 80% of its rated air performance when 100 equivalent feet of 7” round
ductwork is attached. Use this chart to calculate the equivalent duct length of your system.
HJ0050
Broan Model 407
Straight Duct
7” round x 2’ long
Equivalent length
2 ft.
HJ0049
Broan Model 419
6” Round Elbow
Equivalent length
8 ft.
Broan Model 412H
3¼” x 10” to 7”
Round Transition
Equivalent length
5.5 ft.
Broan Model 428
3¼” x 10”
Right-angle Elbow
Equivalent length
8.5 ft.
Broan Model 429
3¼” x 10”
Right-angle
Flat Elbow
Equivalent length
24 ft.
Broan Model 430
3¼” x 10”
Right-angle
Short Eave Elbow
Equivalent length
15 ft.
Sears Model 59391
3¼” x 10” Wall Cap
Equivalent length
45 ft.
(7 ft. w/o damper)
HJ0048
Broan Model 401
Straight Duct
3¼” x 10” x 2’ long
Equivalent length
2 ft.
HJ0056
HJ0057
HJ0058
HJ0059
HJ0060
HJ0061
Broan Model 431
3¼” x 10”
Right-angle
Long Eave Elbow
Equivalent length
15 ft.
HA0085
HA0037
Broan Model 647
7” Round Wall Cap
Equivalent length
34 ft.
(6 ft. w/o damper)
Sears Model “Ducting Accessories” available by calling Sears at:
1-800-4-MY-HOME
®
Broan Model “Ducting Accessories” available by calling Broan at:
1-800-558-1711
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