
C. Sidewalls/Surrounds
Adjacent combustible side walls must be located a minimum of 12 in. (305 mm) from the fireplace opening. See Figure 3.4. If you are using a decorative surround constructed of combustible material, it must be located within the shaded area de- fined in Figure 3.3. Short stub walls are also acceptable if they are contained within the shaded area.
| BRICK | 4 in./10.2 cm |
FLUSH FRONT | FRONT | |
|
|
A | |||
50 deg. | B | ||
39 deg. | |||
12 in. | 12 in. | ||
30.5 cm | 30.5 cm | ||
Cat # | A | B | |
36 in./91.4 cm | 42 in./106.7 cm | ||
42 in./106.7 cm 48 in./121.9 cm |
Figure 3.4 Sidewalls and Surrounds
D. Frame the Fireplace
Figure 3.5 shows a typical framing (using 2 x 4 lumber) of the fireplace, assuming combustible materials are used. All re- quired clearances to combustibles around the fireplace must be adhered to. See Figure 3.2. Any framing across the top of the fireplace must be above the level of the top standoffs.
2 in./51 mm minimum air space clearance
to the enclosure.
Use only noncombustible material below the top of the top standoffs.
53- 7/8 in.
1368 cm
721 cm
10 Outdoor Lifestyles by Hearth & Home Technologies Inc. • Montana