1.with PVC seal inside the aluminum track,so that it's noiseless when sliding,and this seal protect the wheels and make its lifetime last long,
2. Ball-bearing double spring wheel mechanism  ,
3.304stainless steel handle,
4.with additional aluminum profile connected to the wall profile so that no screw is seen from outside 5.double sliding doors with polished chrome finished 1.2mm thick frame ,flat  surface ,
6.with white magnetic seal on the closing door;
7.out of true wall adjustment 20mm