Archival quality foam board really helps to protect your fine photographs or paintings from your harmful effects of pollution and external chemicals up. It isn’t heavy, an important consideration if you are framing a large picture that’s eventually going to be stuck on the wall. This kind of mount board can also be very rigid. This will be significant, as you should not work with a flimsy mount board that could warp the top of the artwork mounted to it. If you want to preserve your artwork for a long time, then you will want to search for conservation quality framing items that have not only the power to capture and render harmless airborne toxins, but have also removed harmful acids too.