Protecto F-SAFE SST 12/20 Serie Instructions De Montage Et D'emploi page 58

•
Position the doubler plates exactly over the Ø 135 mm hole, then fasten them using the
enclosed countersunk head screws after drilling the pilot holes in the wall
•
The fixing holes in the doubler plate are offset, so that one plate can be screwed to
another if the plates are turned 180°
•
After fastening the doubler plates, insert the firestop plugs (one each on the inside and
outside (see Figure 3).

Feed the cables through, then seal the openings with the silicone which is supplied with the
product.

F30 cable / pipe bulkheads: Two doubler plates plus the wall plate on
which the bulkhead is installed -> wall thickness 120 mm

F90 cable / pipe bulkheads: Three doubler plates plus the wall plate on
which the bulkhead is installed -> wall thickness 150 mm

Note that the required wall thickness also includes a layer of internal
insulation (approx. 40 mm)
57
Optional accessories
Figure 2
Figure 3