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There is an option if your coach is missing the aluminum lower shelf/track. Prior to the use of this method, Airstreams used a combination of elastic straps and snaps to hold the drapes closer to the wall. This method consisted of:
- On the outer (vertical) edges of the window or window pair, snaps were utilized to secure the outer edges of the drapes to the wall.
- Where two drapery panels join, a snap or pair of snaps were often utilized to secure the panels together.
- The elastic was sewn into the lower edge or hem of the drapes, and when combined with the snaps between panels did a good job of holding the drapes against the wall.
When the drapes in my Overlander were re-done about seven years ago, the elastic was left out and the drapes were lengthened about three or four inches. This additional length maintains privacy while allowing the drapes to control light even if the drapes aren't tight against the wall. The decorator who made my drapes utilized several velcro tabs between drapery panels to secure them together, and this has worked out quite well.
Good luck with your drapery project!