Welcome.
Blinds, by Irving Shade and Door (ISD).
Pull bar falls off.
Go to Michaels (the craft store). Buy a package of the smallest dowel rods they have (3/16" I think).
Remove the pull bar end cap. Fold the end of the blind material over 1/4" and staple it.
Slide the blind material into the bar.
Slide the dowel rod into the bar to lock it in place.
Re-install the end cap. You can go to their website to download instructions for adjusting them
http://www.irvineshadeanddoor.com/wp...adjustment.pdf
Hope this helps.
Happy trails