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BACK VENTING
When venting out through the wall, one or two elbow fittings are required, depending on the
blower configuration:
DUCT COVERS AND BACK VENTING
Low profile elbows may interfere with the duct cover frame. Mount the duct cover to the hood,
and test fit the elbows to confirm proper fit.
ELBOWS FOR 600 AND 1200 CFM
Hoods with 1200 CFM blower systems require two 8” elbows and fittings, one for each 600 CFM
blower unit.
ELBOWS FOR 900 CFM
Units with 900 CFM blower systems require one 8” elbow and fittings, one 6” elbow and fittings.
(Drawing not to scale)
Side View
8” Round
Low profile elbow:
8” [20.3 cm] round to 6 x 8 1/2”
Elbow and Transition Heights 600 CFM and 1200 CFM
Standard 8” [20.3 cm] round - 10 3/4” [27.3 cm]
Height when
fully adjusted to
90 degrees:
Height
12”
[30.5 cm]
6”
[15.2 cm]
16”
[40.6 cm]
8” Round
[20.3 cm]
8 ½”
[21.6 cm]
Standard 6” [15.2 cm] round - 8 1/2” [21.6 cm]
Standard 8” [20.3 cm] round - 10 3/4” [27.3 cm]
Elbow and Transition Heights 900 CFM (1 x 600 CFM + 1 x 300 CFM)
(Drawing Not To Scale)
Side View
8” Round
Height when
fully adjusted to
90 degrees:
Height
12”
[30.5 cm]
6”
[15.2 cm]
16”
[40.6 cm]
8” Round
[20.3 cm]
8 ½”
[21.6 cm]
Low profile elbow: 8” to 6” x 8-1/2”
INSTALLATION
(CONT.)
©2018 Hestan Commercial Corporation
17
EN
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