2 Set Adjustable Solar Panel Tilt Mount Brackets Aluminum Alloy Mounting Bracket Stand Systems Support 50W 70W 100W 150W 200W 300W 400W Panels for Roof/Boat/Flat Surface

OK, these have held up great. I built a rectangle frame using 4x4 and 2x4 with 8" casters. So, I can move the panel for the morning and setting sun, if I have to. I also bought a set for two large panels that I used for a fixed mounting that doesn't get moved around.I'm ordering 4 more today for more panels and will build a similar frame for them as well. The trick here is getting the correct angle adjustment depending on where you live in relation to the equator. You only have so much adjustment on the rear of the panels with this setup. The rectangle you build might need to be a different depth than mine. Consult our friend Pythagoras and his theorem for the right triangle angles to calculate a rough depth of your frame. It's pretty easy. Mine's very simple and requires 30 degrees to 60 degrees where I live. The other dimension (width calculation) is just making sure the panels fit.So, the only adjustment you can change is the rear height adjustment. These use two Allen head bolts. Now, as far as I know, Allen was an American and didn't use the metric system in the early 20th century, although maybe he should have. Opinions will vary in this, but the bottom line is that many old guys like me don't normally have metric Allen wrenches. Just so you know, it might be a be good idea to purchase metric Allen wrenches (I bought sockets) to fit these aluminum bolts. Otherwise, you will wallow them out making adjustments, using something close (SAE), but not right. From what I can tell, these are 6mm Allen head bolts. The bolts themselves appear to be 8mm thread in case you want to replace them with hex heads instead of buying metric Allen sockets. I figured I would use them on automotive brake jobs for my sons, who seem to be able to afford newer cars than I have, but can't afford to get them fixed :)

I was pleasantly surprised with the high quality design and construction, right down to the nuts and bolts used. I was really happy to find the little rubber pads to use under the feet that I have leaning onto my fancy vinyl fence. The adjustable struts are very sturdy. I needed to be able to lift the struts upward behind the 70"x45 solar panels and fold down the panels when not in use so that they can be stowed away, covered with giant outdoor TV covers :-). It all worked out great!

Currently I have of these in use with another 4 panels coming online. These mounts work great on these heavy panels. The ONLY that sucks is the panels must be in portrait mode. Unless you want to drill new holes in your panels.. I’m able to adjust the angle for whatever I need depending on the month. Right I’m at about 37 degrees tilt. I’m going to mount the mounts lol to some 2x4 or 4x4s because right now they on sitting in the ground and when moving/adjusting it adds stress to the mounts. But that’s my fault. On a good day I’ll get 100%+ efficiency on the panels. This is all diy in the backyard off grid setup. I had built a giant wooden contraption that turned out to be a huge fail. I didn’t think it through. So I went for the simplest solution. This. In my opinion. Once I get some 4x4s cut and screwed in they’ll be extra solid! I guess they are a bit expensive but when I look at all the money I’ve already spent 60 bucks for two panels is nothing. Product is well made for sure.

Perfect setup for an adjustable mounting system. Highly recommend.

Good for flat roof but a little long for my slanted roof. Had to cut off 4" to get the angle I wanted. I could not find any one selling the size I needed so this had to do. No Fault of seller. works great.

exactly what I searched. Easy to install, very stable . i will buy them again.

I really like the strength and sturdiness of the material. These will work great, as long as you are not wanting to set your panels flat. These are for a permanent placement of your panels, not for place placement on top of something you if your traveling. These will not lay flat to a mounting surface.I am only returning these for that reason.

Maybe my expectations are just too high, but this is complete garbage! For starters, the bolts are way too large for the standard holes in the frame of the panel so you will need to bore out the holes with a dremmel tool like I did, thus ruining any warranty you may have had on the panel. Then once you've ruined your frame you'll discover that their excessively large nuts have too large of a flange and will not center beneath the hole that you just made larger to fit the excessively large bolt. So back to the dremmel tool to make the hole even LARGER, and encroach dangerously close to the inside edge of the frame in order to get the bolt and nut to align.Ok, now that we have all of the legs securely fastened (or so we think), and the nuts torqued down as tight as they will go, let's carefully flip over the panel in preparation for mounting. Well... that was the last straw for me. Even though I torqued down the bolts that secure the joints and keep them in place at the angle I needed, the longer legs went completely flat and my panel slammed to the floor (see the last photo). Thankfully my panel is in one piece and not broken. I will be sending this back.