I recommend using frames so that you can enjoy your chips everyday! As for the Hard Rocks, I recommend framing them with glass on both sides.

I've read that light will sometimes have an adverse effect on chips over time. As a result, I recommend using glass or acrylic sheets that are supposed to provide some UV protection.

http://www.cassidyframes.com says their acrylic sheets filters out 45% of Ultraviolet rays.

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