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2.2 Installation instructions
Inspect the masonry fireplace according to the safety information and fireplace requirements and have it
cleaned and/or upgraded as necessary.
2.3 Compliance of the masonry fireplace
Where the masonry fireplace opening is 6 ft
(508 mm) in front of the facing material and at least 12'' (305 mm) beyond each side of the fireplace opening.
Where the masonry fireplace opening is less than 6 ft
(406 mm) in front of the facing material and at least 8'' (203 mm) beyond each side of the fireplace opening.
Note that if you must modify the hearth extension to comply with these measures, depending on the size of the
masonry
fireplace
4'' (102 mm ) thick (see Figure 2.6a and 2.6b.)
2
(0.56 m
opening,
the
hearth
2
) or larger, the hearth extension shall extend at least 20''
2
2
(0.56 m
), the hearth extension shall extend at least 16''
extension
must
9
have
a
minimum
of
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