6
EQUIVALENT DUCT LENGTH CHART
Kenmore range hoods are designed to perform efficiently when attached to long runs of duct. As a point of
reference, this hood will function at approximately 80% of its rated air flow when 150 equivalent feet of 6”
round ductwork is attached. Use this chart to calculate the equivalent duct length of your system.
Broan Model 428
3¼-in. x 10-in.
Right-angle Elbow
Equivalent length
8.5 ft.
Broan Model 429
3¼-in. x 10-in.
Right-angle Flat
Elbow
Equivalent length
24 ft.
Broan Model 430
3¼-in. x 10-in.
Right-angle
Short
Eave Elbow
Equivalent length
15 ft.
Broan Model 431
3¼-in. x 10-in.
Right-angle
Long
Eave Elbow
Equivalent length
15 ft.
Sears Model 59691
6-in. Round
Wall Cap
Equivalent
length
34 ft.
(6-ft. w/o
damper)
Sears Model
59391
3¼-in. x
10-in.
Wall Cap
Equivalent
length
45 ft.
(7-ft. w/o damper)
Sears
Model 59091
Roof Cap
(accepts 7-in. round
or 3¼-in. x 10-in. duct)
Equivalent length
30 ft.
(7-ft. w/o damper)
Sears Model “Ducting Accessories” available by calling:
Sears at 1-800-4-MY-HOME
®
Broan Model 401
Straight Duct
3¼-in. x 10-in. x 2-ft. long
Equivalent length
2 ft.
Broan Model 406
Straight Duct
6-in. round x 2-ft. long
Equivalent length
2 ft.
Broan Model 419
6-in. Round Elbow
Equivalent length
8 ft.
Broan Model 412H
3¼-in. x 10-in. to
6-in. Round
Transition
Equivalent length
5.5 ft.
Sears Model 59581
3¼-in. x 10-in. to
6-in. Round Transi-
tion
Equivalent length
5.5 ft.
Broan Model “Ducting Accessories” available by calling:
Sears at 1-800-558-1711
