I'll up date once I install them on explorer. The corners could use some kind of structure. None presentAdded two 160 watt panels to a existing factory installation of one panel, linking them in series . Works great no issues, seem to be well built and sturdy.Good sturdy panel, works well, highly recommendedBought this solar panel along with a 12 volt deep cycle battery, and connected them via my own charge controller. Panel is able to keep the battery charged without a problem. Puts out 13.7 volts.I use this panel on top of my jeep to power my car fridge, it runs through a Jackery 240( you have to buy a separate adapter) and it keeps the battery charged to100% all the time with the fridge running. The first panel delivered looked like it got stepped on so I had it replaced but the second one that came looked fine.Pros: Well packaged. Good price. Quality was better than expected. Busbars look to be clean and correct. Sturdy aluminum frame. Adhesive used to mount PV tray to the aluminum frame is clean and solid. Wiring is good.Cons: As you can see in the pix, the Sun is clearly overhead yet I'm only getting 95w-to-100w from this 160w panel... consistently. That's a 38-40% loss over stated panel maximum. This is in southern California with no clouds and zero haze. The price was good but with its poor performance I'm afraid this will have to go back.We used this to charge our batteries for our night lights. Works greatProduct is solidly made. Manufacturers defect prevents me from getting full power from this device. This should be sold as a defective unit or factory reject and not as a new product with its claimed output. Tear in solar panel should have been caught by quality inspection. Makes me wonder if all of this sellers products have this issue.