We cut the best 26-inch sections we could find out of boards of the same depth. After a few rounds of scrubbing and sanding, we stained the wood the color of our floor, pantry and countertops.
The boards are screwed into the trim that frames them, and we added another section of trim down the middle of the back side. Wheels on the bottom bear the weight of the door as screw-in eye bolts slide across a piece of pipe at the top. We drilled out holes in two wood blocks to fix the pipe in place. And, voila, we have a door. It's a little rough and squeaky as it moves. At first, I was determined to tweak the design, but it's grown on me. It feels and sounds like an old door, and that's quite fitting.