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2.2
FIRE PLACE OPENING
The front opening of the fire place must be between 410 and 420mm wide, and
between 550 and 560mm high. If the opening exceeds these dimensions then a
surround must be constructed from suitable non-combustible material to produce a
suitable sized opening. Any surround must be suitably sealed to the fire place to
prevent leakage. See fig. 3 below
Fig.3
Minimum Flat
Sealing Area
575mm minimum
A min / max sized opening with a flat rear face between the fire opening and flue
outlet terminal is shown below. (fig 4).
Fig.4
Outer Wall
Firebox Front
420mm maximum
Flue Outlet
455mm minimum
Fire Opening
410mm minimum
Minimum Cavity Depth
150mm. Maximum Flue
Length 600mm, dependent
on rebate available
7
555mm
minimum,
565mm
maximum
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