Can the product only recommend but would (available connections) recommend as an accessory grounding set. I have the assembly (screws / dowels not included) somewhat modified. Apparently to the perforated plate with 4 screws (2 each top / 2 below) are attached to the wall in the area of the cable passage. Then the housing (self-tapping) Tapping screws must also be attached to the 4 lateral holes at perforated plate again. This can possibly after repeated waste / mounting problems with the result, "thread". Instead, I have therefore the side holes drilled on the perforated plate and then a little pale and perforated housing with 4 hanger bolts (M6x60) and wing nuts fastened together. The question is not whether a dust cover (brush strip, etc.) would also not make sense.
