Screen blocks are decorative blocks--they are not considered structural units and should not be used as such. Screen blocks are often applied in commercial projects for stairwells and parking garages, however, their popularity lies in the residential market for use in property line walls. In these partition walls, the potential of a screen block is maximized: it's open design provides ventilation, partial shading, privacy, and a decorative break in the monotony of the wall's surface. We have seven styles of screen block available, each with a number designation. Our screen blocks are manufactured with coral limestone or a cinder/limestone mixture.