Review on Upgrade Your Home Lighting: DAKASON LED Flush Mount Ceiling Light Fixture With 5 CCT Selectable And Dimmable Features For Versatile Use In Kitchen, Hallway, Bathroom, Living Room And Entryway by Matthew Rodenbaugh

If your ceiling junction boxes are "floating" and not absolutely firmly in place, it's impossible to make these lights sit securely flush ( since the plate that holds the light attaches to the junction box). The so called safety line (what would be the ground) is way too short, so it's not helpful in holding the light while you are attaching the two main wires. I could not attach to the ceiling because the plate that holds the light is too small in diameter, and its holes to attach to the ceiling are too close to your main cutout for the junction box, so there's no real drywall to hold it. Right now I'm trying to glue the plate to the drywall.