Minimum Masonry Opening And Clearances To Combustibles - Osburn 1700-I Installation And Operation Manual

9.3

Minimum Masonry Opening and Clearances to Combustibles

MINIMUM CLEARANCES
F 16" (406 mm)
G 9" (229 mm)
H 27" (686 mm)
I 27" (686 mm)
Q 84" (213 cm)
MINIMUM MASONRY
OPENING
J 21 ½" (546 mm)
K
27 ½" (700 mm)
16
12 ⅞ (328 mm)
L
16 If a fresh air intake is required, it is recommended to add at least 4" to the width of the minimum opening of the hearth.
Installation and Operation Manual - Osburn 1700-I
COMBUSTIBLE MANTEL SHELF
COMBUSTIBLE
TOP SURROUND
I
G
F
FLOOR PROTECTION
L
Figure 24: Masonry Opening and Clearances
Q
H
J
K
MAXIMUM
THICKNESS
O 5" (127 mm)
P 12" (305 mm)
P
O
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