I bought two pieces of structural aluminum tube from Online Metals to raise the height of the screen. (Structural aluminum tube, not pipe. It's not cheap, but worth it.) Bottom edge of my screen is now about 59" off the floor. Each aluminum tube is 24" long, and one fits snugly inside the other. One has an outside dimension of 1.375" (same as the center post) and the other has an inside dimension of 1.402" The larger tube fits snugly over the center post and the smaller tube, extending the height by 24" It fits well, so the screen does not teeter or become appreciably less stable. (Remove the black plastic plug from the top of the center post for everything to work.) I also bought from B&H photo the Hakuba PSTC 400 Pro Series Light Stand or Tripod Case - for Light Stands or a Tripod up to 46" Long (Black). It doesn't fit perfectly but allows me to check the screen safely on airplanes. Also, the lines on the screen will largely disappear if you store the screen with the center line facing up or leave it open awhile before you use it. I haven't figured out how to lessen the sag at the top yet but it doesn't bother me much.
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