It was fast and relatively easy. Remove the screws from the side wall that holds the curtain in place. Remove the little lock on the track on each side and slide the curtain out. Remove the hangars (they are just pinched shut and easily opened.) Measure from the lock on the track to the center of the track (ours had a black mark at center) on each side. Ours was 57" on each side. You will need to make the width to this measurement and perhaps a few inches more for fulness. Make the length the same as the original curtain or whatever length you like. I used quilt bias tape for all the edges so did not need to add extra for seam allowances. The quilt bias is wider than the usual ½" bias binding. Using this will speed up the job but you can make seams all around. We bought a leather punch from the hardware store to make the holes for the ¼" grommets at the top and on the sides where the screws go. Grommet kits are available with a little tool to install at Hancock Fabric and probably JoAnn's. Camping World sells extra hangars (12 to a box) but be sure to take one hangar with you to match up for the same kind as in the PC. Sew the Velcro to the middle edges of the panels; I put one strip on the side facing the RV and one on the other panel facing the windshield. This position makes it easier to close them because they will lap over . The original curtain has one grommet every 10" but this is too far apart for material so a few more are needed to make it hang nicely. Do not make the width to the full extended size of the original curtain or you will have way too much fabric. Once the grommets are in, put in the hangars, pinch them closed, and reinstall in the track. Put in the track lock and the screws and you are done. You won't need the long plastic rod because the material opens and closes easily by hand. I divided the total width into two uneven sizes so that the wider was on the driver side and the smaller one on the passenger side. This meant that we could close the curtains near the steering wheel instead of dead center; that left less bulk on the passenger side to get in the way of the little "table" that is on the 2551 by the door. If your material is real thin, you might need to add some interfacing at the top and sides for the grommets. I used a white silky blackout material with sage green binding and it looks like it "belongs" . it is so much easier to open and close than the original. If you have any questions, I would be happy to help. Nancy
