Fastening systems We have two types of fastening systems. Namely visible and blind fixations. Below are two examples, but depending on the situation, different ways of confirming are possible. MD Verti - STV111Adjustable visible attachment. No additional edits required for the panel. Screws in the same colour as the panel. MD Resto - STR111Adjustable invisible attachment. Frame on rear panel provided. Fixation by hanging down panel.