If you do not want to change anything on the building itself, it is very easy to install the sun protection in a surface-mounted box on the outer building shell. With their low winding diameter and small box size required, heroal zip screens are ideally suited to be retrofitted at a later date. Thanks to the wide variety of colours and designs, they can be perfectly adapted to the look of your home. The slim guide rails of the heroal VS Z also underline the subtle design.