Osburn OB01151 User Manual
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MINIMUM MASONRY
OPENING
J
21 3/4" (552 mm)
K
26" (660 mm)
L
12 7/8" (327 mm)
CLEARANCES
F
13” (330 mm)
G
9” (229 mm)
H
27” (686 mm)
I
27” (686 mm)*
FLOOR PROTECTOR
CANADA
USA
B
18’’ (457 mm) – Note1
16’’ (406 mm) – Note 1
M
8’’ (203 mm)
N/A (Canada only)
N
N/A (USA only)
8’’ (203 mm)
* For a 6" (152 mm) shelf. See Table SHELF POSITIONING (Section 2.5) for other shelf
dimensions.
Note 1: From door opening. The depth of a non-combustible shelf in from of the insert is included
in the calculation of the floor protector’s dimensions.
IMPORTANT: The masonry hearth should be at least 4 inches (102 mm) higher than the
combustible floor in front of it. If the hearth elevation is lower than 4 inches, the non-combustible
floor protector in front of the insert should have an R value equal or greater than 1.00.