The Eagle T500 creates an assembly line for sealing uniform box sizes. The machine automatically folds the top flaps, and seals both the top and bottom with plastic tape.
If you have multiple box sizes, you can adjust the machine for different box sizes. It's not built for random box sizes, though. You must do all of one box size, adjust the machine, and then seal all of another box size.
Tape head can accepts 2" or 3" tape.