29
Min. 39-1/2” (1003 mm)
M
in. 12”
(305 mm)
Non-combustible
board required
thickness:
1/2 inch (13 mm)
Framing Requirements
Minimum Non-Combustible Board
Dimensions
Minimum coverage area of non-combustible board.
Any wall fi nish applied to shaded area must be non-
combustible. We recommend extending the non-
combustible board well beyond the size shown to
avoid cracking due to differential shrinkage
—see page .
QUALIFIED
INSTALLER
