GE PV977 Owner's Manual And Installation Instructions page 13

CONSTRUCT CEILING SUPPORT
Plan the Location of the Hood and Ductwork
• Use a plumb bob to check the location.
must be centered with the 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.
Ceiling Support Structure
• At the hood location, install cross framing between
ceiling joists as shown. (2x4 wood supports are
required to support the weight of the hood.)
EXAMPLE A
16" Joist
spacing
49-80550-3
Installation Preparation
PREPARE TO INSTALL THE HOOD
Install cross-framing symmetrically
Top view – ceiling joists parallel to front of hood
Duct covers
Align with
center of
cooktop
• Arrange cross framing in the ceiling to suit the
existing structure.
examples.
8" Duct
2x4 Cross framing
wood supports
Front
of
Align duct to
hood
center of cooktop
Ceiling
Hood
ducting
centerline
Cooktop
Countertop
Side view
Cooktop
outline
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