Lindab WH25 - Installations within vertical rigid wall

INSTALLATION
WH25
LINDAB SAFE
19/50
 Installations within vertical rigid wall
Refer to the section Construction supports characteris-
tics p.17 for further information.
Comply with the minimum distances indicated on section
Minimum distances p.15.
 Wall opening
A opening must be provided in the wall as indicated in the
table and in the drawing
 Damper positioning
Position the damper in the opening so that the side of the
closing mechanism extends as indicated in the drawing.
 Filling
Fill the space between the wall and the damper as indicat-
ed in the table and in the drawing.
Fire resistance classi-
cation
“D” hole size
[mm]
Wall minimum thickness
“S”
[mm]
Sealing
EI 120 S Installation within vertical rigid wall
Wall minimum density 550 kg/m³
EI 120 S
(500 Pa)
From Ø + 25
to Ø + 440
(circular hole)
100 Mortar or plaster putty sealing
EI 90 S Installation within vertical rigid wall
Wall minimum density 550 kg/m³
EI 90 S
(500 Pa)
From (Ø + 50) x (Ø + 50)
To (Ø + 70) x (Ø + 70)
(square hole)
100
Rock wool 100 kg/m³ with
inll plasterboard (thickness
12.5 mm)
WH25
19/50
LINDAB SAFE