The process of manufacturing of block boards is similar to the flush doors with wood infill. The only difference is there is no outer frame. Same size pieces of wood are glued and pressed between cores and veneer to produce the block boards. These boards are mainly used in furniture industries as it has sufficient strength required in the furniture.
Block board of thickness 19mm and 25mm made from 100% pinewood/hardwood are available in MR grade and BWP grade