These 2 mil and 4 mil record sleeves are made of museum grade Archival Polyester (Mylar), an inert material of the highest clarity. Polyester will not discolor, damage or adhere to items placed inside it. It is a sturdy film that will give extra support to fragile documents. We use DuPont inert Melinex or a suitable equivalent. Polyester is used worldwide in museums, libraries and archives. Our polyester material is approved by the Library of Congress for archival storage. This material has passed the Photo Activity Test.

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ARCHIVAL 12" LP Gatefold Sleeve.
25-1/2 x 12-13/16" (inside) x 4 mil POLYESTER
2 Pockets. 7/8" center slit.
Polyester Gatefold Record Jacket Sleeve
Description:
MUSEUM GRADE ARCHIVAL
12" LP Gatefold Sleeve
25-1/2 x 12-13/16"   4 mil POLYESTER (Mylar)
Fits over open Gatefold Jacket.
7/8" slit in the center on one side of the sleeve.
2 equal pockets 12-13/16 x 12-5/16".

This sleeve is open on both outer short ends to facilitate Gatefold Jacket insertion and the removal of records without having to remove the sleeve. Center slit (one side) allows the jacket to be closed without crimping the record jacket spine. Holds up to 200-gram Gatefold Jackets.
Use this sleeve for your most valuable records!
We use crystal clear museum grade Archival Polyester
 (Mylar), an inert material of the highest clarity. Polyester will not discolor, damage or adhere to items placed inside it. Our polyester material is approved by the Library of Congress for archival storage. 

Gatefold Record Jacket Sleeves Video.

Base SKU: s2512r

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POLYESTER (Mylar) Sleeve
13 x 13" 2 mil with 1" flap.
Fits over an LP Record Jacket.
POLYESTER Sleeve for LP Vinyl Records
Description:
POLYESTER (Mylar) Sleeve
13 x 13   2 mil with 1" flap
Fits over LP Record Jacket.

Our polyester material has passed the Photo Activity Test and is approved by the Library of Congress for archival storage.

Base SKU: s1313m2

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POLYESTER (Mylar) Sleeve. Snug fit.
12-5/8 x 12-5/8" 4 mil. NO flap.
POLYESTER (Mylar) Record Jacket Sleeve
Description:
POLYESTER (Mylar) Sleeve
12-5/8 x 12-5/8"   4 mil NO flap.
Fits snuggly 
over an LP Record Jacket and therefore fits in our LP storage boxes XLP65 and XLP65PC.

Our polyester material has passed the Photo Activity Test and is approved by the Library of Congress for archival storage.

Base SKU: s1212r

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POLYESTER (Mylar) Sleeve
13 x 13" 4 mil . NO flap.
Fits over an LP Record Jacket.
POLYESTER  Sleeve for LP Record Jacket
Description:
POLYESTER (Mylar) Sleeve
13 x 13"   4mil . NO flap.

Fits over an LP Record Jacket.

Our polyester material has passed the Photo Activity Test and is approved by the Library of Congress for archival storage.

Base SKU: s1313r

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BACKINGS for LP Records. 12-3/4 x 11-7/8".
.040 Super Acid-Free Board.
Acid-free BACKINGS for LP Records.
Description:
BACKINGS for LP Records
12-3/4 x 11-7/8"
.040 Super Acid-Free Board

Buffered. All white. Lignin-free. Acid-free. Contaminant-free.
Meets the Library of Congress archival standards.

Base SKU: kaf401313

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