The DZ-810-AU Custom automatic Vacuum Sealing Machine is a extra large capacity floor model vacuum sealer designed for sealing contents in vacuum pouches. This model may be customized for chamber size and seal bar placement. The DZ-810-AU Vacuum Sealing Machine sealing operation and lid action is controlled by a single button for repetitive packaging. It is equipped with two seal bars (placement and length may be customized) and user adjustable controls for vacuum cycle, seal bar temperature and cool-down timing. This is the perfect vacuum sealer for large cuts of meat and whole fish. Plus, a letter and number kit is included which will allow date and text message identification to be embedded in the seal of each package. A great way to set "freshness" markings. All ERC vacuum chamber machines are heavy-duty models designed for countless sealing operations. Other than periodic replacement of pump oil which is included with the unit, no other user maintenance is required.