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STEP 1 CONSTRUCT CEILING SUPPORT
Plan the Location of the Hood and Ductwork
• Use a plumb bob to check the location. The
countertop/cooktop below the hood must be centered
with the hood.
Front
15-7/8"
31-3/4"
Align With
Center of
Cooktop
42" Hood Side View
Ceiling Support Structure
• At the hood location, install 2 x 4 cross framing between
ceiling joists as shown. (2x4's are required to support the
weight of the hood.)
EXAMPLE A
8 5/8"
16" Joist
Spacing
Top View – Ceiling Joists Parallel to Front of Hood
Installation Instructions
Ceiling
Hood
Ducting
Centerline
Cooktop
Countertop
12-3/4" (42" Hood)
17" (54" Hood) Install
Cross-Framing
Symmetrically About
Duct/Cooktop Centerline
10" Duct
Front
of
Hood
• The hood should extend beyond the front and rear edge
of the cooking appliance.
• The duct in the ceiling must be centered over the
cooktop.
Front
Align With
Center of
Cooktop
• Arrange cross framing in the ceiling to suit the existing
structure.
• Your ceiling joists will be like one of the following
examples.
2x4 Cross
Framing
Align duct
Cooktop
to center of
Outline
Cooktop
10
Ceiling
Hood
Ducting
Centerline
18-1/8"
36-1/4"
Cooktop
Countertop
54" Hood Side View
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