General product description
The SA 2020 SN is a self-levelling cover that can be installed such a way that it will not be in direct contact, i.e. directly resting on the shaft underneath, but can also be fitted directly on top of a shaft using grout.
The SA 2020 SN contact the underlying base at three points and are therefore extremely stable and do not produce any rattling noises. They are also equipped with hinges – which in turn are equipped with safety stops – and can thus be easily opened and closed, and can be individually removed from the frame. When closed, the first covers are always locked through the relevant following ones. The last cover is equipped with a self-locking mechanism, which is fully open at the bottom and can therefore not become blocked.
B+F Dorsten’s SA 2020 SN are manufactured using steel, concrete and galvanised metal components.


