Model 2872 features the new tube filtration system, which cleans with a 99 capture rate at 1 micron. These tables are very popular with the small to medium sized shops. Many large shops use this model line when sanding small items to allow each sander to have their own station. Standard features are 115 volt and casters and these features can be varied. They come with 4 swivel casters including two that lock. When mobility is important this model line is your best choice. If ordered with three phase, the table will come with a magnetic starter. The height can be requested from 29 without casters to any reasonable height.