BACKINGS for British Quad Posters. 30 x 40". .1875 thick Foam Board. Acid-free & Buffered. Indefinite storage.
DETAILS
MUSEUM GRADE
British Quad Poster Foam Board Backings
30 x 40" .1875" (3/8") thick.
Acid-free, lignin-free & Buffered.
All white. Indefinite storage.
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.
British Quad Poster Foam Board Backings
30 x 40" .1875" (3/8") thick.
Acid-free, lignin-free & Buffered.
All white. Indefinite storage.
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.