Pinit Backings for First Day Covers. U.S. Cover #6. 3-3/4 x 6-5/8". .040" thick Acid-Free Board. Indefinite Storage. SKU: KAF40US6 Price: $14.14Unit Price: $0.5656 25 - Price: $14.14 25 - Price: $11.00 50 - Price: $19.48 100 - Price: $34.94 DETAILS Backings for First Day Covers - U.S. Cover #6. 3-3/4 x 6-5/8" .040" thick Acid Free Board. Board is all white. Acid-Free, lignin-free, buffered. ... DETAILS Back DETAILSBackings for First Day Covers - U.S. Cover #6. 3-3/4 x 6-5/8" .040" thick Acid Free Board. Board is all white. Acid-Free, lignin-free, buffered. Use for Indefinite Storage. Use with polyethylene sleeve SFDCUS6.
