Archival Foam Board Backings for 24 x 36" images. .125" thick (1/8"). All white. Acid & lignin-free. Buffered. Indefinite Display.

Museum Grade
24 x 36" Foam Board Backings
1/8" thick. Acid-free, lignin-free and buffered.
All white. Use for Indefinite display.
This board is an indefinite-term, archival board. It has a polystyrene foam core (making it ultra light-weight) with a laminated white, smooth facing. It is buffered with 3% calcium carbonate and is acid-free with a pH of 7.5-8.5. Buffered board blocks migrating acids.