DUCT FITTINGS
This Hood Must Use an
8 Round Duct. It Can
Transition to a
3-1/4 x 12 Duct.
permissible lengths for duct runs to
outdoors.
NOTE:
permissible equivalent lengths!
Maximum duct length:
100 feet for range hoods.
Flexible ducting:
all the equivalent feet values in
the table should be doubled. The
as possible.
NOTE:
may interrupt the proper flow of
water heaters and other naturally
vented systems. To minimize the
chance of interruption of such
heating equipment manufacturer's
guidelines and safety standards
install any makeup (replacement)
air system in accordance with local
building code requirements.
49-80512 Rev. 4
Installation Preparation
Duct Piece
Dimensions
round transition
Round wall cap
with damper
with damper
Round roof cap
length of duct pieces are based on actual tests conducted by
good venting performance with any ventilation hood.
Equivalent
Quantity
Length*
Used
1 ft.
(per foot length)
1 ft.
(per foot length)
43 ft.
26 ft.
2 ft.
5 ft.
6 ft.
13 ft.
32 ft.
44 ft
Total Duct Run
Total
Equivalent
Length
5