Osburn OB04010K Installation And Operation Manual page 37

6.3.5.2 Option #2 - Installation raised less than 8
• A 2.00 R value for the hearth extension is required. The non-combustible hearth extension floor area
must extend at least 32" (813 mm) (B) in front of the hearth.
• The upper and lower angle, for the full width of the floor protection, must be protected 2" horizontally
and 2" vertically (E) by a bent and continuous piece of sheet metal (not included). Apart from these two
corners, the sheet metal does not have to cover the rest of the wall between the base of the fireplace
and the floor.
• An 84" clearance between the fireplace base and the ceiling (A) must be respected.
A
B
C
E
HORIZON – Installation and Operation Manual
MINIMUM MEASUREMENTS
84" (2134 mm)
32" (813mm)
Less than 8" (203 mm)
2" (51 mm)
"
from floor
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