GE Profile 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.
The countertop/cooktop below the hood
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
Installation Preparation
Install cross-framing symmetrically over
duct/cooktop centerline
8-1/4"
Top view – ceiling joists parallel to front of hood
Duct covers
3-1/8"
13-13/16"
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.
10-5/16"
8" Duct
2x4 Cross
framing wood
supports
Front
Align duct
of
to center
hood
of cooktop
13
Ceiling
Hood ducting
centerline
27-5/8"
Cooktop
Countertop
Side view
Cooktop
outline