These automatic/manual constant heat sealers have a mesh seal that is about 5/8" wide and heats from both top and bottom. Excellent for sealing poly-cello films, humidity proof cellophane films, polyethylene films, aluminum foil coated bags and gusseted bags. Separate programmable timers for material thickness, congealing and recycle time. Auto mode allows for continuous automatic operation by setting the recycle time. Foot switch is included for manual operation.