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W415-2000 / F / 04.13.21
EN
22
rough framing
3.3 minimum clearance to combustible enclosures
* Refer to “venting requirements” and “venting installation” sections.
Vent Sections
When passing through a wall, use fi restop spacer W010-1800 (supplied).
When passing through a ceiling, use fi restop spacer W500-0028 (not supplied).
note:
** Clearances within the enclosure may be higher (refer to “minimum framing dimensions” section).
Firestop
assembly
Non-combustible
material
1" [25mm]
0” [0mm] if non-combustible
finishing material is used
such as brick and stone.
Insulated
sleeve
3"
[76mm]
to top
2"
[51mm] to
sides / bottom
Non-combustible
Brick
Combustible
1" [25mm] minimum all sides for vertical venting sections.
When passing through a ceiling, use firestop
W500-0028 (not supplied).
4"
min.
12"
[305mm]
* 72"
(182.8cm)
min.
10 1/4"
A
EX36 EX42
A
59” 63”
+ rise
* The minimum enclosure
height is determined based
on volume of air needed in
the enclosure.
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