Order Placed: August 27, 2020I received my order very quickly but was working and didn’t get them installed for about a week. They are very lovely at night-like crystal balls. The posts on my deck are 3 1/2” by 3 1/2” but I cut thin black foam sheeting into 3/4” by 2” pieces and hot glued four pieces on the inside of each light. I had to get longer screws but they were easy to install; I just pre-drilled each hole and the screw goes in easily. If you only screw them in half way, you can make any adjustments to the base to ensure that they are centered and then finish tightening them. I only ran into one problem; While I was gluing the foam pieces into the base I then pulled the insulating sheet and set the light back on the Styrofoam to protect it from being damaged. I was not going to be able to put them on deck posts until the next day so I put the boxes of lights back into the packing box - and when I shut the lid . . . the lights came on because it was dark. I would suggest leaving the insulating sheet in place until just before mounting. My lights stayed on all night because it was dark inside that box. When I mounted them the next day they didn’t have time to charge fully but that was my fault for not paying attention. The next night (following a sunny day) I couldn’t wait until dark. When I went outside I saw that two of the lights didn’t come on. I removed the screws on the first light and saw that I had missed one of the insulating sheets. It worked immediately after removing it. The second light just did not work. When I installed the four lights on the back deck, one of them did not come on at all and the insulating sheet had been removed before installing. Overall I am very happy with my purchase. The lights are beautiful and bright enough to see without turning on the porch light but not so bright that they draw flying insects. They were a little large for the posts but a little imagination, a hot glue gun and foam sheeting remedied that challenge. Two of the lights did not work at all and those were my “‘back up/just in case something happens to one of the other lights.” I have had many compliments already and will be buying more lights soon.