I realize this is an old thread, but for those people that may need help with these brackets you can all Irvine Shade and Door at 574-522-1446 and they will mail you replacement brackets - just be sure to look at the pictures in the prior post's link and know which one you need.
We had roller shade simple fall off while driving home from our last trip (not one we really ever use so it was kinda crappy it fell off). I saw that two of the brackets plastic piece broke off and the third was ok. Have not been able to find them anywhere so called Irvine direct and the young lady that answered took my name and address and said she would ship them out to me today... will post a followup to confirm they followed through with that mailing...
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