The VP400 is a double chamber commercial vacuum sealer which is designed for high volume packers. This unit uses a commercial-grade 1.5 HP rotary oil pump and includes four 16" wide seal bars. Unit comes with 4" casters for easy moving. Exterior is built from durable stainless steel, so you know it'll clean up easy! Vacmaster designed this unit to run on 110V and single phase. The easy to use control panel lets you set the vacuum, seal and cool time. Bag locks on the seal bar gasket reduce bag movement during busy production cycles. Maximum Chamber Bag Size: 16" x 20". Contact us with any questions you have on this outstanding product!