Construction vacuums for large jobs are wet and dry vacuums with a more than 25L capacity. You can use these all-purpose vacuums for long and demanding jobs, like on the workshop. This way, you can vacuum construction dust and grit daily without problems. A construction vacuum with a more than 25L capacity saves a lot of time. You empty the container less often than with a small capacity construction vacuum, so you can work for hours on end and pay full attention to your job.