Opton Vertix W-NOTKSd / J-WZNH is an easy access cable designed for structural installation in multi-family and office buildings. It has G.657.A2 fibers which are characterized by high resistance to bending and mechanical resistance. The easy access cable is installed vertically in the building, a hole should be cut in the outer shell on the appropriate floor and the fiber should be led outside. The fiber prepared in this way is installed in a special tube (not included) and led to the subscriber's apartment.