Hi Adrianne, I'm the monitor this week. C2CC can't recommend or endorse specific products, but hopefully other readers will have thoughts to share. In the meantime, you may find some helpful related information and/or contacts you could follow up with if you search through archived discussions. Here are a few:
UV Filtering Sheers has some tips about what to look for when choosing window coverings.
UV Window Film has information for those interested in that option, as well as posts with links to excellent resources on light exposure.
Window Film + Roller Shades covers some more technical details about measuring how much light your window treatments are blocking, and also has some good general pointers.
The Protecting Art from UV Light thread from the American Alliance of Museums community forum also covers similar territory.
Thanks,
Rebecca
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Rebecca Smyrl
Connecting to Collections Care Monitor
Library & Archives Conservator
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