KESPEN Frosted Window Privacy Film Heat Control UV Sun Blocking Glass Stickers Static Cling Non Adhesive Door Coverings Decals for Bathroom Home Office, Frosted, 17.5 Inch X 6.5 Feet

Q: What is the difference between white and frosted?

Hello, thanks for your question. They both can control heat, block UV and protect privacy, the only difference is the visibility of the frosted is a little higher than the white. Hope that would help you.

Q: Does it provide night-time privacy? The description only mentions daytime privacy.

Hello, thanks for your question. In fact, this window film can provide all day privacy. Hope that would help you.

Q: Will it stay on if it’s installed on the exterior of the window, open to the elements?

I don't believe it would. It's basically a static cling film so if moisture gets between the film and window, it will most likely bubble and pull away.