To order the right glazing block you need to know, among other things, how thick or wide your component to be installed is. Depending on this, the width of the glazing block is determined. Basically, the frame and the thickness of the planned glass or glass composite determine the glazing units to be used. They determine both the thickness and the width of the required blocks. The recommended material is one that is weather-resistant, dimensionally stable, load-bearing and shock-absorbent. In the past, hardwood was used. Today, polypropylene is the first choice.