MONO - a lockable single frame holder which offers completely new presentation varieties for spectacles. Flexibility is guaranteed because there is no need to use a modular or rectangular grid any longer. It can be mounted directly onto the wall or onto different perforated panels. The design is filigree but not simple with a perfect combination of anodised aluminium and glossy white synthetic. This presentation system is lockable with a push-key and thanks to a reduction clip it fits for each size and model of spectacles.