4.2.2 alcove clearance to combustible enclosure
note:
When framing with an alcove, the enclosure height must be 72" (1829mm), not 70" (1778mm).
NON-COMBUSTIBLE
MATERIAL
56 3/4"
1441mm
CEILING
72"
1829mm
ENCLOSURE
HEIGHT
1245mm
* See venting section.
important:
The fi restop assembly provided must be used when the vent pipes pass through any combustible wall, fl oor, or
ceiling.
INSULATED
COMBUSTIBLE
SLEEVE
STEEL STUD
6"
FRAMING
152mm
MAX
16 1/4"
413mm
49"
32 3/4"
832mm
2"
51mm
1"
25mm
framing
2"
51mm
0" IF NON-COMBUSTIBLE
FINISHING MATERIAL
IS USED SUCH AS
BRICK AND STONE.
1"
25mm
FIRESTOP
ASSEMBLY
52 7/16"
1332mm
MINIMUM
PLUS RISE *
W415-2372 / A / 11.14.19
EN
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