S-5! N Clamp

The S-5-N is a good product. to get it to fit the Marvin ProRib, you have to use a pry bar to pull up the rib enough for the tooth of the S-5-N to fit under the lip. (either literal mini-pry bar or a chisel has the correct fit to pry) You pry up under the lip to one side of the clamp, jam in a quarter of the S-5-N tooth and hold the clamp with firm pressure so its hold doesn't pop out, then pry the lip on the other side of the clamp and the other 3/4 of the clamp tooth correctly pops into the gap under the lip. you may have to retry prying on both sides as you force the clamp tooth into the lip gap. After figuring out the prying to get the brackets in they work great. Note: Marvin ProRib is 26 gauge steel and only says to use 50 in pounds. Using a torque wrench, the steel encounters metal failure before the 50 in pounds. Torque should securely hold the rib, and hold tight enough to slightly deform the rib as at that point the hold is just crushing the rib and the tooth under the rib edge which holds the pull-away from rib, is doing the work. Similarly, once you are deforming the rib, the load would have to further deform the rib to slide down the run, so just initially deforming the rib is the goal, not mash the rib to maximum crush and horribly deforming the roof. Vendor should comment on this nuance.

These standing seam clamps are of excellent quality and work perfectly for attaching solar racking to my roof. Dealing with Schafer Metals was a good experience, they delivered my order quickly and accurately. I would highly recommend both product and company.

Everything arrived well packed and correct. Good job.

i am using these to get a point of attachment on a standing seam metal roof to set solar cell panels.no penetration, solid connection