Be careful with adding the casters. While it does make the frame easy to move, if your floor is not perfectly level, the frame could be thrown out of whack when you move it. I have casters on mine, and it was installed by the vendor. I moved it to clean, then moved it back. I thought I had it in the exact original location, but it is out of level and after a couple years of trying to get it back, I'm going to bite the bullet & have them come out & re-level.