I have a king-size bed on an adjustable base that my dog is small enough to get under. I am worried about him getting under there when I don't know it and getting hurt when I use the adjustable base, so I was looking for a frame that I could put around the bed to keep the dog (a 15-pound schoodle) from going under it. This is a bed kit (headboard, side rails, footboard, and crossbars) that will fit around an adjustable base (at least the Purple regular king adjustable base), but it is not a perfect fit (at least if the adjustable base is set up first). If you are putting it around an adjustable base you will use all the pieces except the crossbars.
The box is smaller than you would expect because most of the pieces are zipped into the back of the headboard. When you get it delivered, the box is just under 80lbs and it is helpful to have two people move it. But, once you get the headboard out and unzip the back, one person can move all of the pieces pretty comfortably (albeit not necessarily easily). There is some assembly required. For example, you do have to attach the legs and the sides to the headboard frame, connect the side boards together, and put the feet on the footboard. The instruction page is fairly clear on what all of the parts are, and what parts are to be used in which steps. All of the screws and washers are in a single bag, so it is very helpful to sort them out ahead of time which will make putting everything together much easier. The hardest part, if you are putting it together around an existing adjustable base will be to connect the side boards to the headboard and footboard. Basically, there are 8 screws, two on each side of the headboard and two on each side of the footboard that brackets on the side boards slip over and then you tighten the screws. It is not easy to get at the screws on the second side once you get one side put together. That said, the end product is very good.
I put this together by myself in about an hour and a half (aside from the crossbars which I obviously did not need). I love having a headboard that prevents my pillows from falling between the bed and the wall, and it looks nice. And, it does a good job preventing the dog from getting under the bed which was the main purpose I got this for. I absolutely recommend it.