Dust Classes: What is the difference between L, M & H-CLASS?

With the current world climate focusing on wearing masks and everyone being concerned about certain particles floating in the air. The construction industry is still moving forward at full pace. With that, power tools are still used daily, and dust is collecting on the ground or window sills. Should dust be piling up, though? No, dust, especially around the construction space, isn’t just dust. 

More