Heatilator I80 Owner's Manual Installation And Operation page 29

12 in.
Min.
12 in.
Min.
Figure 8.3 Raised Hearth Extension
12 in.
Min.
Figure 8.4 Flush Hearth Extension
20 in.
Min.
30 in. min.
12 in.
Min.
Heatilator • I80 • 4013-023 Rev R • 10/06
Note: Maximum height from floor
under fireplace to top of finished
hearth extension is 7-5/8 in. (195 mm)
20 in.
(508 mm) Min.
Hearth Extension
Floor
Micore
Noncombustible Material
Note: Maximum height from floor
under fireplace to top of finished
hearth extension is 7-5/8 in.
Floor
30 in. Min.
Hearth Extension
Micore
Noncombustible Material
Hearth Strip
Hearth Strip
29