Construction vacuums for medium-sized jobs are all-purpose vacuums with a capacity of up to 18 to 25L. You use these wet and dry vacuums for medium-sized jobs, like DIY jobs. For example, vacuum dust when sanding stairs or clean up wood chips and sawdust after sawing. For these jobs, a capacity of up to 18 to 25L is big enough. Want to perform large jobs daily, like vacuuming dirt and grit during professional jobs? Choose a construction vacuum with a larger capacity. This way, you can use the construction vacuum all day without it getting full.