3
Framing
Wall Finish
30-1/4” (768 mm)
to header
27-3/8” (695 mm) to
cement board
3-5/8” (92 mm)
cement board
supplied
22-1/2”
min.
(572 mm)
Wall Finish
This is the framing
width. Drywall to
23-3/4” (603 mm) wide.
Minimum 12-3/4” (324 mm)
(Allow extra for rear vent elbow)
drywall
570 plate outline
wall finish must be
non-combustible
at top of opening
gap must
remain open
for air flow
cement board
23-3/4”
(603 mm)
25” (635 mm)
WALL
FINISH
no 570
plate
with 570 finishing plate
tile up to
plate:
tile behind
plate:
Tile or finish
thickness
1-1/8”
(30 mm)
1-3/8”
(35 mm)
5/8”
(18 mm)
Drywall
1/2” (12.7 mm)
