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Chase and Framing Installation and Planning
Metal Studs
Non-Combustible Framing
A layer of non-combustible material (⅝" Type X fire
resistant drywall or ½" cement board) is required
on the exterior of the metal framing . This provides
heat protection for the finishing material .
A layer of non-combustible material (⅝" Type
X fire resistant drywall or ½" cement board) is
recommended on the inside of the chase when a
television (or similar element) will be installed above
the fireplace . See "Television Mounting Information"
for more details . A clearance of 1/2" is needed
between the non-combustible material and the
firebox .
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Non-Combustible Material
(⅝" Type X Fire Resistant
Drywall or ½" Cement Board)
Wood Studs
Combustible Framing
A layer of non-combustible material (⅝" Type X fire
resistant drywall or ½" cement board) is required on
the interior (cladding the entire inner cavity/chase)
and exterior of the wood framing . This provides
heat protection for both the combustible framing
and the finishing material .
A clearance of 1/2" is needed between the non-
combustible material and the firebox .
Non-Combustible Material
(⅝" Type X Fire Resistant
Drywall or ½" Cement Board)
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