I bought some originals over the Presidents’ Day weekend art show - and I have become a really big fane of the “Superfine” art show.

However, I live beachfront, which means the salt spray gets all over everything - and I like open windows/doors etc.

Putting glass over a painting tends to reduce the impact, at least for me.

Does anyone know of a type of frame, which I could swing open to look at the painting, then swing closed to protect it from salt?

Try searching shadow boxes. There are a variety of sizes and you might find one that fits your needs.

This may sound simplistic, but I think I'd find coordinating fabric that you could stitch into a drapable cover for each painting. I'm assuming they're different sizes. When covered, the draped cloth (I'm thinking tapestry-like) would provide a pleasant sight. Easy to just pull off when you want the paintings seen. As an advantage, they could be easily washed if necessary.

I would suggest that you research a little more into protective glass. I don’t know the cost, but I have seen rare and valuable paintings in museums that the glass protection was nearly undetectable.

Anti-Reflective Water White-Art Glass AR70 by artglass.

They sell high end glass that you can not see and does not glare.

Go to a higher end framing shop.