GE Monogram ZGU384N Installation Instructions Manual page 12

"
2-3/4"
22-3/8"
cutout
depth
19-5/8"
cooktop
cutout
depth
Front edge of countertop
"
30-3/4"
28-1/2" vent cutout
28-1/2" cooktop
area cutout
7/16" cooktop overlap
(1-1/4" at center)
"
23-7/8"
total flat
surface
required
at center
2-1/2" min. clearance
to cutout
2-7/8" min. cooktop
cutout to rear vertical
combustible surface
1/8"
gap
12" min. cutout to
wall, both sides