Osburn OB04002 - Manual (Page 49)

Stratford Fireplace Installation and Operation Manual
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6.3.3.3 Compliance of a Combustible Mantel Shelf
To ensure compliance of an
existing mantel shelf or to install a
combustible mantel shelf, refer to
table and figure below. For
example, a mantel shelf with a 6’’
depth (152 mm) ((C) value) must
be installed at least 58" (1473
mm) ((B) value) above the bottom
of the fireplace (see figure below).
Different mantel shelf dimensions
are listed in the following table.
However, no combustible mantel
shelf can be installed at less than
58" (1473 mm) above the bottom
of the fireplace. If the depth of
the mantel shelf is not listed in the
table below, add 52" (1321 mm)
to the depth of your mantel shelf
to obtain the safe positioning of
your mantel shelf. For example,
for a 9" (229 mm) mantel shelf,
the safe positioning would be 61"
(1549 mm) above the bottom of
the fireplace 52" (1321 mm) + 9"
(229 mm)).
CLEARANCES
A 80" (2032 mm)
SHELF POSITIONING
B C
58" (1473 mm) 6" (152 mm)
60" (1524 mm) 8" (203 mm)
62" (1575 mm) 10" (254 mm)
64" (1626 mm) 12" (305 mm)