Tennant B5 Walk-Behind Floor Burnisher/Polisher Battery Operated Self Propelled. Ensure safe, indoor sound levels with the battery floor burnisher’s quiet operation — as low as 64 dBA. Maintain indoor air quality with standard, active HEPA dust filtration. Change the pad from an ergonomic position using the walk-behind floor burnisher’s 90-degree flip-up head. Achieve consistent cleaning performance with optional Set and Forget(TM) that lets supervisors set the pad down pressure to the optimal level for the facility. Head Size: 20 in / 510 mm. Productivity: Up to 20000 sq ft / 1858 sq m. Filtration Type: HEPA/Active Dust Control. Pad RPMs: Up to 2100 rpm. Machine Width: 24.5 in / 622mm. Service Plans: Gold, Silver, Pay as You Go, Block of Time. Machine Height: 43 in / 1092 mm. Sound Level: As low as 64 dBA. Estimated Run Time: Up to 3 Hours. Battery Charger Type: On-bo.