Archival Foam Board Backings for Window Card Posters. 14-1/8 x 22-1/8".
.1875" thick. Acid-free, lignin-free and buffered. All white. Indefinite Storage.
DETAILS
MUSEUM GRADE
Window Card Poster Foam Board Backings
14-1/8 x 22-1/8" .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.
Window Card Poster Foam Board Backings
14-1/8 x 22-1/8" .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.