Heat & Glo ST-36TR-IPI Owner's Manual page 22

TOP VIEW
FIREPLACE
OPENING
3-1/4 in. Min.
Note: Clearance from opening to perpendicular wall.
Figure 5.9 Combustible Mantel Leg or Wall Projections
(Acceptable on both sides of opening)
SHEETROCK
3.5 in.
AIR SPACE REQUIRED
Figure 5.10 Non-Combustible Zone
22
1/2 in.
Min.
2-3/4
in. Min.
Unlimited
1 in.
Max.
Heat & Glo • ST-36TR-IPI, PIER-36TR-IPI • 2176-900 Rev. G • 3/13