National's DL4000 combines the sturdy construcion of the DL3000 with a pass-through junction box, allowing additional equipment to be connected. Equipped with a Longopac bagging system, this machine exceeds HEPA standards. Width: 25" Height: 63.21" Length: 38.7" Weight: 260 lb Voltage: 230V Phase: Switchable Single or Three Phase Outlet Hz: 60 Vacuum Pressure: 98.4" Water Air Movement: 318 CFM Filter Area: 32.3 sq/ft Filter Efficiency: 99.995 @ .14 microns Inlet: 3.15" National Flooring Equipment stands behind its products with a one-year warranty. We will replace or repair any product or part necessary at our Minneapolis, MN facility or at a National-designated certified warranty location. Our warranty includes the cost of freight expenses on qualified repair.