Osburn OB04010K Installation And Operation Manual page 40

6.3.5.5 Option #5 - Installation raised more than 12" from floor
• No R value for the hearth extension is required. The non-combustible hearth extension floor area must
extend at least 16" (406 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
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MINIMUM MEASUREMENTS
84" (2134 mm)
16" (406 mm)
12" and more
2" (51 mm)
HORIZON – Installation and Operation Manual