W415-1793 / A / 05.07.18
EN
16
rough framing
3.2 minimum clearance to combustible enclosures
* Refer to “venting requirements” and “venting installation” sections.
Vent Sections
When passing through a wall, use firestop spacer W010-1800 (supplied).
When passing through a ceiling, use firestop spacer W500-0028 (not supplied).
note:
** Clearances within the enclosure may be higher (refer to “minimum framing dimensions” section).
34 7/8"
[88.6cm]
1" [25mm]
Firestop
assembly
Non-combustible
material
0” (0mm) if non-combustible
finishing material is used
such as brick and stone.
Mylar
sleeve
Combustible
Steel stud frame
3"
[76mm]
2"
[51mm]
49 3/4"
[126.4cm]
minimum
plus ride *
Max.
4 1/2"
[114mm]
7 1/2"
[191mm]
42 3/8"
[107.6cm]
59 1/2"
[151.1cm]
ceiling
78"
[198.1cm]
enclosure
height
78"
[198.1cm]
ceiling
Firestop
assembly
Non-combustible
material
Steel stud frame
Non-combustible
Brick
Combustible
34 7/8"
[88.6cm]
1" [25mm]
0” [0mm] if non-combustible
finishing material is used
such as brick and stone.
49 3/4"
[126.4cm]
minimum
plus rise *
59 1/2"
[151.1cm]
enclosure
height
Mylar
sleeve
3"
[76mm]
to top
2"
[51mm] to
sides / bottom
Non-combustible
Brick
Combustible
6 3/4"
[171.5mm]
1" [25mm] minimum all sides for vertical venting
above enclosure ceiling. When passing through a
ceiling, use firestop W500-0028 (not supplied).
5 3/4"
[146mm]
1½" [38mm] minimum all sides for vertical venting
inside the enclosure.