GE Profile PV977 Owner's Manual And Installation Instructions page 14

CONSTRUCT CEILING SUPPORT (Continued)
EXAMPLE B
16" Joist
spacing
EXAMPLE C
Install cross-framing symmetrically
over duct/cooktop centerline
Installation Preparation
Install cross-framing
symmetrically over
duct/cooktop centerline
8-1/4"
Top view – ceiling joists run perpendicular to front of hood
10-5/16"
8-1/4"
16" Joist
spacing
Front
of hood
Top view – ceiling joists at angle to front of hood
10-5/16"
8" Duct
Front
Align duct
of
to center
hood
of cooktop
2x4 Cross
framing wood
supports
8" Duct
Align duct
Cooktop
to center
outline
of cooktop
14
2x4 Cross
framing wood
supports
Cooktop
outline