AS530R: 20", 19-gallon, micro-rider scrubber, pad driver + brushes, 28" squeegee, onboard charger, 140 Ah AGM batteries is an automatic scrubbers in the Advance, Nilfisk and Viper floor-care range available through A.J. Gates. The listed squeegee width is 28.0 inches. The listed tank capacity is 19.0 gallons.