This automatic/ manual constant heat sealer is excellent for sealing poly-cello films, humidity proof cellophane films, polyethylene films, aluminum foil coated bags and gusseted bags. A distinctive 5/8 inch mesh seal makes this sealer ideal for producing wide seals on thick bags. Separate programmable timers for material thickness, congealing, and recycling. Foot switch included for manual operation. Optional serrated (horizontal lined) jaws available.