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We stock 5 grades of Poster Backing Boards:
1. Standard Acid-free is acid-free all the way through. Acid-free board can trap migrating acids in paper and neutralize it. Use our .028' thick board for intermediate to long-term storage. White on both sides.

2. Super Acid-freeMuseum Grade Archival. Our .040" thick board is all white. It is acid- and lignin-free and buffered with a 3% calcium carbonate buffer. 

3. Corrugated is either .0625" thick (E-Flute, white on two sides) or .1875" thick (C-Flute, white on 2 sides). It is a popular choice for a backing board because it is rigid and economical.

4. Foam Board - Museum Grade Archival This board is an indefinite-term, archival board. It has a polystyrene foam core (making it ultralightweight) 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. It is either .125" or .1875" thick, super rigid.

5. Archival CorrugatedMuseum Grade Archival. This board is .125" thick, B-Flute, "Banner Blue" corrugated cardboard. It is acid- and lignin-free and buffered with a 3% calcium carbonate buffer. Safe for indefinite-term storage. 

Scroll down for available sizes and pricing.

BACKINGS for Lobby Cards 11x14
BACKINGS for Lobby Cards 11x14
Description:
.030 thick Chipboard.
Short-Term Storage.

White on one side. pH neutral chipboard.
.030 thick Chipboard.
Short-Term Storage.
Base SKU: kcb30lc

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BACKINGS for Lobby Cards / Digital Photos
BACKINGS for Lobby Cards / Digital Photos
Description:
11 x 14"
.028 thick Acid-Free Board.
Long-Term Storage.

White both sides.
11 x 14"
.028" thick. Unbuffered.
Base SKU: kaf28lc

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BACKINGS for Lobby Cards 11 x 14
BACKINGS for Lobby Cards 11 x 14
Description:
.040 thick Buffered, Acid-Free Board.
Museum Grade Archival.

All white.
.040 thick Buffered, Acid-Free Board.
Museum Grade Archival.
Base SKU: kaf40lc

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BACKINGS for Lobby Cards 11 x 14
BACKINGS for Lobby Cards 11 x 14
Description:
.125 thick Foam Board.
Museum Grade Archival.

All white and buffered.
Ultra lightweight.
.125 thick Foam Board.
Museum Grade Archival.
Base SKU: klcfc

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BACKINGS for Lobby Cards 11 x 14
BACKINGS for Lobby Cards 11 x 14
Description:
.1875 (3/8") thick Foam Board.
Museum Grade Archival.

All white and buffered.
Ultra lightweight. Indefinite storage.
.1875 (3/8") thick Foam Board.
Museum Grade Archival.
Base SKU: klcfc1875

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Mini Poster Backings. 11 x 16.
Mini Poster Backings. 11 x 16.
Description:
.0625 thick E-Flute Corrugated.
Short-term storage.

White on 2 sides.
.0625 thick E-Flute Corrugated.
Short-term storage.
Base SKU: k1116625

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Mini Poster Backings. 11 x 16".
Mini Poster Backings. 11 x 16
Description:
.1875 thick C-Flute Corrugated.
Short-term storage.

White on 2 sides.
Base SKU: k1116125

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Mini Poster Backings. 11 x 16.
Mini Poster Backings. 11 x 16.
Description:
. 030 thick Chipboard.
Short term storage.

White on one side.
. 030 thick Chipboard.
Short term storage.
Base SKU: kcb301116

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Mini Poster Backings. 11 x 16.
Mini Poster Backings. 11 x 16.
Description:
.028 thick Acid-Free Board.
Long Term Storage.

White on both sides.
.028 thick Acid-Free Board.
Long Term Storage.
Base SKU: kaf281116

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Mini Poster Backings. 11 x 16.
Mini Poster Backings. 11 x 16.
Description:
.040 thick Buffered, Acid-free Board. Museum Grade Archival.
100% Alpha-cellulose board. Conservation grade. Indefinite storage (100s of years).
.040 thick Buffered, Acid-free Board. Museum Grade Archival.
Base SKU: kaf401116

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Mini Poster Backings. 11 x 16.
Mini Poster Backings. 11 x 16.
Description:
.125 thick Foam Board.
Museum Grade Archival.

All white and buffered. Ultra lightweight.
.125 thick Foam Board.
Museum Grade Archival.
Base SKU: k1116fc

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Backings for 12 x 16 Prints
Backings for 12 x 16 Prints
Description:
.0625 thick E-Flute Corrugated.
Short-term storage.
.0625 thick E-Flute Corrugated.
Short-term storage.
Base SKU: k1216625

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Backings for 12 x 16 Prints
Backings for 12 x 16 Prints
Description:
.030 thick Chipboard.
Short Term Storage.
.030 thick Chipboard.
Short Term Storage.
Base SKU: kcb301216

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Backings for 12 x 16 Prints
Backings for 12 x 16 Prints
Description:
.028 thick Acid Free Board.
Long Term Storage.
.028 thick Acid Free Board.
Long Term Storage.
Base SKU: kaf281216

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Backings for 12 x 16 Prints
Backings for 12 x 16 Prints
Description:
.040" thick, buffered, acid-free board.
Museum Grade Archival.
.040" thick, buffered, acid-free board.
Museum Grade Archival.
Base SKU: kaf401216

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Backings for 12 x 16" Prints
Backings for 12 x 16
Description:
.1875" thick, C-Flute, white on 2 sides.
Short-term storage.
Base SKU: k1216125

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BACKINGS for Jumbo Lobby Card/ LARGE Tabloid
<font color=5f5a59>BACKINGS for Jumbo Lobby Card/ LARGE Tabloid</font>
Description:
14 x 17" 
.030" thick Chipboard 
14 x 17"
.030" thick Chipboard
Base SKU: kcb30tabl

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BACKINGS for Jumbo Lobby Card/ LARGE Tabloid
<font color=5f5a59>BACKINGS for Jumbo Lobby Card/ LARGE Tabloid</font>
Description:
14 x 17"
.028 thick Acid Free Board.

Long Term Storage.

White both sides.
14 x 17"
.028" thick Acid Free Board
Base SKU: kaf28tabl

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BACKINGS for Jumbo Lobby Card/ LARGE Tabloid
<font color=5f5a59>BACKINGS for Jumbo Lobby Card/ LARGE Tabloid</font>
Description:
14 x 17"
.040 thick Buffered, Acid-Free Board.
Museum Grade Archival.

White all the way through.
14 x 17"
.040 thick Acid-Free Board. Buffered.
Base SKU: kaf40tabl

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BACKINGS for Jumbo Lobby Card/ LARGE Tabloid. 14 x 17.
BACKINGS for Jumbo Lobby Card/ LARGE Tabloid. 14 x 17.
Description:
.0625 E-Flute Corrugated.
Short-Term Storage.

White on two sides. pH neutral corrugated cardboard.
.0625 E-Flute Corrugated.
Short-Term Storage.
Base SKU: ktabl625

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