4 Units per Set Solar Panel Mounting Z Brackets, Solar Panel Mounting Brackets Lightweight Aluminum Corrosion-Free for RVs, Trailers, Boats, Yachts, Wall and Other Off Gird Roof

These are about 1/2" taller than the Callsun brackets I ordered. This height allows more cooling between the roof and panel l. They are also tall enough to keep the mounting bolt from puncturing the roof. Great brackets.

Fit my 100 watt solar panel perfectly. Was very impressed to see that it's made out of pretty thick aluminum. I would say at least 16 gauge material if not a little thicker. And uses nice stainless steel fasteners. I would absolutely buy this product again when I decide to pursue my next solar panel project. I really can't think of anything that they could have done differently to improve the design of this product. I think it works great.

I got 2 packs (8 brackets total) to mount a solar panel to my RV roof. Probably overkill but I don’t want it going anywhere. Great brackets and I had no issues with them.

All of the z brackets look similar. You wont know everything, untl you get them. This one has serrated nuts, and no washers included. Several others have flat washers and lock washers and bolts. This is easier to assemble, and take apart, lining up fewer parts. This one has thicker aluminum. Although I dont know if its the same grade aluminum as the others. But it wont rust. This one also uses slightly smaller screws to mount into wood. Probably strong enough for high winds. I've found several times the smaller screws stop tightening about half way in, and I've had to put a larger screw in, to finish tightening it. (maybe it hit a knot). Its well made, and simplified using the serrated nut vs 2 or 3 washers on each screw.

Used these to install a Renogy 200W solar panel to the top of my travel trailer. These Z brackets are better than the name brand ones, and much less expensive. I did use stainless steel nylock nuts vs the ones supplied as I did not want them coming loose. I like how they have 2 screws per bracket as well.

I bought these for my RV solar panel install and they work great. Easy to install on the panel and on the roof. The only thing extra you need is some roof sealant. If I get more panels, I'll surely get more of these.

Their working well on my rv roof , even in high winds

These don't come with the locking washers nor the standard flat ones. But for me, unless you need extra washers to put aside to suit some other need for them some other time, you don't need the washers for the mounts. I have several solar panels on the roof of my house. The nuts and bolts are fine for most standard solar panels without using the washers. MAYBE for an RV or any fast moving vehicles in a high headwind situation would benefit from using flat washers between the bolt, the mount and the panel to be safe. But otherwise, personally, I didn't need them. So far they have stood up on higher wind conditions fluctuating around 35 MPH with no problems The nuts bolts and screws arrive sorted and for me that saves a little extra tedious work