30", 22-gallon, traction-drive, pad drivers, 37" squeegee assembly, 25-amp on board charger, (2) 215 Ah WET batteries is an automatic scrubbers in the Advance, Nilfisk and Viper floor-care range available through A.J. Gates. The listed cleaning width is 30.0 inches. The listed squeegee width is 37.0 inches. The listed tank capacity is 22.0 gallons.