10pcs Solar Panel End Clamp for Standard Unistrut, Aluminum 30mm/35mm Solar Panel Brackets with Nuts Bolts, Solar Panel Mounting Kit for Metal Roof, Tin Roof, Flat Roof, Sheet Roof, Black

These worked really well on my standard Unistrut roof mount and 35mm HQST 100W panel. I had one minor issue with the bolts hitting the bottom of the Unistrut before they were tight on the clamp, so I had to locate the mounts such that the bolts could go through the holes in the bottom wall of the Unistrut. Update: I just learned that this is because I had "14 gauge Unistrut" which is almost half the dept of "12 gauge Unistrut." So just know that these clamps WILL work with 14 gauge (shorter) Unistrut if you adjust the clamps so the bolts go through the openings--or buy shorter standard metric bolts if needed. I think the bolts were 5-10mm too long for my Unistrut. Overall, I am SO PLEASED with the very solid and professional mount that I ended up with. Moving the panel 1" left or right to align with the Unistrut holes was not a big deal for me.There is one leg of the Z that is for 35mm thick panel frames and one leg is for the 30mm panel frames--just flip the bracket around and use the other hole. Good flexibility. I think this would fit nearly any panel, because in addition to the two leg heights, you also have the amount of thread on the bolt to accommodate thicker panels. Panels with less than 30mm of thickness might not work without modifying the clamps, however.Really happy with the plastic Unistrut nut locators (an extra feature that allows you to ensure the nuts are positioned properly without having to fiddle with reaching your finger underneath). I used these more than I thought i would, and was glad they were included. Also came with a flat washer and a lock washer for under the bolt head. This makes for a quality and very secure mount. Very worth the extra $2 or $3 over cheaper options.

Good quality. Hold firm to the Unistrut. Fit well. Easy to install. I have purchased twice.