Mcr WIP type multi-blade fire dampers
10/17
MERCOR SA –
the Company reserves the right to make modifications and changes.
Protective grid thickness G (shown in the figures) should ensure that the distance between the surface of the fire
damper’s partition and the front of the grid is at least 97 mm.
Protective grid thickness for typical walls:
110 mm: G
≥
50 mm
120 mm: G
≥
45 mm
125 mm: G
≥
42.5 mm
150 mm: G
≥
30 mm
1. Grid blades
2. Internal frame
3. External frame
4. 4.8 diameter rivet
Modular protective grid for the mcr WIP type fire damper
A modular protective grid may be supplied by the manufacturer of the fire damper or made by the person
installing the product, provided that the following requirements are met:
Item no.
Element name
Material
Dimensions
1
Grid blades
Galvanised or stainless steel sheet
Thickness: 1.25 mm
2
Internal frame
Galvanised or stainless steel sheet
Thickness: 1.25 mm
3
External frame
Galvanised or stainless steel sheet
Thickness: 1.25 mm
Also, the condition of grid thickness depending on thickness of the wall (in which the fire damper has been installed),
has to be satisfied.
