Postcard Backings

Collection Protection Supplies

Postcard Backings come in three grades of board:

Economy: 0.030" thick, pH neutral chipboard, white one side. Short-term storage.
Standard Acid-free: 0.028" thick, acid-free cardboard, white both sides. Long-term storage.
Super-Archival: 0.040" thick, 100% Alpha Cellulose board, off-white, acid-free (alkaline pH 8.5). Lignin-free (alkaline pH 8.5). Conservation grade. Indefinite storage.

Regular Postcard Backings. 3-1/2 x 5-5/8".
0.030" thick chipboard.
White on one side. Short-term storage.

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Description:	Regular Postcard Backings 3-1/2 x 5-5/8" 0.030" thick, pH neutral chipboard. White on one side. Short-term storage. Use with: SPCR2, SPCR4, SPPPCR poly sleeves.
Base SKU:	kcb30pcr
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Regular Postcard Backings. 3-1/2 x 5-5/8".
0.028" thick acid-free board.
White both sides. Long-term storage.

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Description:	Regular Postcard Backings 3-1/2 x 5-5/8" 0.028" thick, acid-free board. White both sides. Long-term storage. Use with: SPCR2, SPCR4, SPPPCR poly sleeves.
Base SKU:	kaf28pcr
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Regular Postcard Backings. 3-1/2 x 5-5/8".
0.040" thick acid-free, lignin-free, buffered board.
All white. Indefinite storage.

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Description:	MUSEUM GRADE Regular Postcard Backings 3-1/2 x 5-5/8" 0.040" thick, acid-free, lignin-free buffered board. All white. Indefinite storage. Use with: SPCR2, SPCR4, SPPPCR poly sleeves.
Base SKU:	kaf40pcr
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Regular Postcard Backings. 3-1/2 x 5-1/2".
0.040" thick. Acid-free, lignin-free, buffered board.
All white. Indefinite storage.

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Description:	MUSEUM GRADE Regular Postcard Backings 3-1/2 x 5-1/2" 0.040" thick, acid-free, lignin-free, buffered board. All white. Indefinite storage. Use with: S35R, SLV35 polyester (mylar) sleeves.
Base SKU:	kaf4035
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Large Postcard Backings. 4-3/8 x 6-1/4".
0.030" thick chipboard.
White on one side. Short-term storage.

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Description:	Large Postcard Backings 4-3/8 x 6-1/4" 0.030" thick, pH neutral chipboard. White on one side. Short-term storage. Use with: SPCL2, SPCL4, SPPPCL poly sleeves.
Base SKU:	kcb30pcl
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Large Postcard Backings. 4-3/8 x 6-1/4".
0.028" thick acid-free board.
White both sides. Long-term storage.

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Description:	Large Postcard Backings 4-3/8 x 6-1/4" 0.028" thick, acid-free board. White both sides. Long-term storage. Use with: SPCL2, SPCL4, SPPPCL poly sleeves.
Base SKU:	kaf28pcl
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Large Postcard Backings. 4-3/8 x 6-1/4".
0.040" thick. Acid-free, lignin-free, buffered board.
All white. Indefinite storage.

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Description:	MUSEUM GRADE Large Postcard Backings 4-3/8 x 6-1/4" 0.040" thick, acid-free, lignin-free, buffered board. All white. Indefinite storage. Use with: SPCL2, SPCL4, SPPPCL poly sleeves.
Base SKU:	kaf40pcl
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Large Postcard Backings. 4 x 6".
0.040" thick, acid-free, lignin-free, buffered board.
All white. Indefinite storage.

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Description:	MUSEUM GRADE Large Postcard Backings 4 x 6" 0.040" thick, acid-free, lignin-free, buffered board. All white. Indefinite storage. Use with: SP46R, SLV46 polyester (Mylar) sleeves.
Base SKU:	kaf4046
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