The S-5-U clamp is by far our most popular and most versatile clamp. It fits about 85% of the standing seam profiles manufactured in North America—including most structural and architectural profiles. The S-5-U clamp can be used on vertically-oriented seams and, by rotating the clamp 90 degrees, it can also be used on most horizontal 2″ seam profiles. Its simple design, generous dimensioning, and multiple hole orientations are what make the S-5-U clamp so versatile for use with the S-5!® snow retention products, such as ColorGard®, as well as with other heavy-duty applications. The S-5-U Mini clamp is a bit shorter than the S-5-U and has one setscrew rather than two. The Mini is the choice for attaching all kinds of rooftop accessories.