4
≤
75*
≥
20*
≤
300
≤
300
≥
25
≥
25
* Around the perimeter
Screw
(min. 4x50)
Position:
1
Fire damper
2
Solid wall construction
3
Stuffing box (mineral stone wool min. density 140 kg/m³)
4
Fire protection mastic min. thickness 1 mm
5
Cement lime plate min. thickness 15 mm min. density 870 kg/m³
6
Duct
≥
100
Screws has to be fixed in wall/ceiling construction.
(If it is needed use steel bracket).
Used materials - example:
3
Promapyr, Rockwool Steprock HD, Hilti CFS-CT B 1S 140/50
4
Promastop - P, K, Hilti CFS-CT
5
Promatect - H
