For folding the web “up” or “down” in web running direction. The products can be folded in one or multiple ribbons. Models are available for two or three level folding capability for plow folding on multiple levels. Unit includes a geometrical folding system for reliable inline folding from 3’ wide to half web width. The adjustable input roller leads the web to the folding head and optimizes the folding geometry to the fold. The adjustable and pivotable twin roller preceding the folding head optimizes the folding geometry and guarantees crease-free web travel. The folding heads have horizontal and vertical adjustment and can fold the web “up’ or ‘down” on one side. Various folding apparatus such as roller plows or folding formers can be easily attached and interchanged for numerous product configurations.