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Flush Wall Brick Finish Detail
Important: Since there is no re brick set along the top of the MAGNUM’s rebox opening, when setting the noncombustible
nished facing material (code required and supplied by others) across the top of the rebox opening there may be a gap between
the back of the noncombustible nish material and the rough front face of the MAGNUM damper plate.
Be sure to check for and ll any such gap with noncombustible Earthcore Mortar in conjunction with placement of the code
required noncombustible nish facing material set across the top of the rebox opening. (Figure 77)
WARNING: Avoid false chimneys.
Important: Failure to seal any gaps between the front face of the MAGNUM damper plate and the back of the noncombustible
nished facing material will create what is known as a “false chimney”. A “false chimney”, in this case, is the narrow gap
(mentioned above) between the back of the noncombustible facing material at the top of the rebox opening and the rough front
of the MAGNUM damper plate. If left unlled this gap creates a “false chimney” which can draw smoke, heat and re out of the
rebox into the space behind the noncombustible nish facing and on up into overhead framed spaces causing a re hazard.
FIGURE 77
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