These Polyester (mylar) L-Sleeves are made from crystal-clear, 4 mil archival polyester, approved by the Library of Congress for long-term storage. We use Dupont inert Melinex or a suitable equivalent. Our polyester has passed the Photo Activity Test (P.A.T.) which means that it is safe for long-term storage.

The unique construction of L-Sleeves (two adjacent sealed sides) allows for quick and safe insertion and removal of photos and prints when not in permanent storage.

Scroll down for sizes and pricing.

We also make a line of Polyester Poster L-Sleeves that fit perfectly in our new Archival Movie Poster Boxes. The unique construction of L-Sleeves (two adjacent sealed sides) allows for quick and safe insertion and removal of photos and prints.

Polyester 'L' Sleeves for "True Digital" 4 x 5.3 prints.
4-1/4 x 5-7/16" (inside). 4 mil Polyester.
Sealed on two adjacent sides.
Polyester L-Sleeves for "True Digital" 4 x 5.3 Photos
Description:
**NEW** 
"True Digital" 4 x 5.3 Photo 'L' Sleeves
4 mil ARCHIVAL POLYESTER

4-1/4 x 5-7/16" (inside dimensions)

These L-Seal Sleeves are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 Mil) and unique construction (two adjacent sealed sides) allow for quick/safe insertion and removal of photos and prints.

Base SKU: slv45dig

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Polyester 'L'-Sleeves for 4 x 5" prints, photos.
4-1/4 x 5-1/4" (outside).
Sealed on two adjacent sides.
Polyester L-Sleeves for 4 x 5" prints
Description:
4 x 5" Photo 'L' Sleeves
4 mil ARCHIVAL POLYESTER
4-1/4 x 5-1/8" (outside dimensions)

These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints.


Base SKU: slv45

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Polyester 'L' Sleeves for 4x6" prints,
photos, large postcards.
4-1/4 x 6-1/8" (outside). 4 mil Polyester.
Sealed on two adjacent sides.
Polyester L-Sleeves for  4 x 6" prints
Description:
LARGE Postcard & 4 x 6" Photo 'L' Sleeves
4 mil ARCHIVAL POLYESTER

4-1/4 x 6-1/8" (outside dimensions)

These L-Seal Sleeves are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints/postcards.

Base SKU: slv46

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Polyester 'L' Sleeves for 5 x 7" prints, photos.
5-1/4 x 7-1/4" (outside). 4 mil Polyester.
Sealed on two adjacent sides.
5 x 7" Polyester 'L' Sleeves.
Description:
5 x 7" Photo 'L' Sleeves
4 mil ARCHIVAL POLYESTER

5-1/4 x 7-1/4 (outside dimensions)

These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints.


Base SKU: slv57

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Polyester 'L' Sleeves for 8 x 10" prints, photos.
8-1/4 x 10-1/4" (outside). 4 mil Polyester.
Sealed on two adjacent sides.
Polyester L-Sleeves for 8 x 10" Prints
Description:
8 x 10" Photo 'L' Sleeves
4 mil ARCHIVAL POLYESTER

8-1/4 x 10-1/4" (outside dimensions).

These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints.

Base SKU: slv810

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Polyester 'L' Sleeves for 8-1/2 x 11" prints.
8-3/4 x 11-1/4" (outside). 4 mil Polyester.
Sealed on 2 adjacent sides.
Polyester L-Sleeves for 8-1/2 x 11" prints
Description:
8-1/2 x 11" Print 'L' Sleeves
4 mil ARCHIVAL POLYESTER
8-3/4 x 11-1/4" (outside dimensions).

These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints when not in permanent storage.


Base SKU: slv8511

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Polyester L-Sleeves for A4.
8-1/2 x 11-7/8". 4 mil Polyester.
Sealed on 2 adjacent sides.
Polyester L-Sleeves for 8-1/2 x 11-7/8"
Description:
'L' Sleeves for A4  Prints
4 mil ARCHIVAL POLYESTER
8-1/2 x 11-7/8" (outside dimensions).

These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints when not in permanent storage.



Base SKU: slva4

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Polyester 'L' Sleeves for 9 x 12" prints.
9-1/4 x 12-1/4" (outside). 4 mil Polyester.
Sealed on 2 adjacent sides.
Polyester L-Sleeves for 9 x 12" prints
Description:

9 x 12 Print 'L' Sleeves
4 mil ARCHIVAL POLYESTER
9-1/4 x 12-1/4" (outside dimensions). 

These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints when not in permanent storage.

Base SKU: slv912

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Polyester 'L'-Sleeves for 11 x 14" prints, photos.
11-1/4 x 14-1/4" (outside).
Sealed on two adjacent sides.
Polyester L-Sleeves for 11 x 14" Prints
Description:
11 x 14" 'L' Sleeves
4 mil ARCHIVAL POLYESTER

11-1/4 x 14-1/4 (outside dimensions)

These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints.

Base SKU: slv1114

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11 x 17" Original Comic Art L-Sleeve.
11-1/4 x 17-1/4" 4 mil Polyester (Mylar).
Sealed on two adjacent sides.
Polyester L-Sleeves for 11 x 17" prints
Description:
11 x 17" Original Comic Art 'L' Sleeves
4 mil ARCHIVAL POLYESTER

11-1/4 x 17-1/4" (outside dimensions).

These L-Seal envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allow for quick/safe insertion and removal of photos/prints/art when not in permanent storage.

Base SKU: slv1117

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Polyester 'L' Sleeves for 12 x 18" prints.
12-1/4 x 18-1/4" (outside). 4 mil Polyester.
Sealed on 2 adjacent sides.
Polyester L-Sleeves for 12 x 18" prints
Description:
12 x 18" 'L' Sleeves
4 mil ARCHIVAL POLYESTER
12-1/4 x 18-1/4" (outside dimensions).

These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints when not in permanent storage.



Base SKU: slv1218

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13 x 19" Original Art/ Print L-Sleeve
13-1/4 x 19-1/4" 4 mil Polyester (Mylar).
Sealed on two adjacent sides.
Polyester L-Sleeves for 13 x 19" Original Art
Description:
13 x 19 Original Art/ Print L-Sleeve
13-1/4 x 19-1/4"
4 mil Polyester (Mylar)
These sleeves have two adjacent sealed sides.

These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allow for quick/safe insertion and removal of photos/prints when not in permanent storage.

Base SKU: slv1319

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Polyester 'L' Sleeves for 14 x 18" prints.
14-1/4 x 18-1/4"(outside). 4 mil Polyester.
2 adjacent side seals.
Description:
14 x 18 Print 'L' Sleeves.
4 mil ARCHIVAL POLYESTER
14-1/4 x 18-1/4" (outside dimensions).

These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints when not in permanent storage.



Base SKU: slv1418

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Polyester 'L"-Sleeves for 16 x 20" prints, photos.
16-1/4 x 20-1/4" (outside).
Sealed on two adjacent sides.
Polyester L-Sleeves for 16 x 20" prints
Description:
16 x 20" 'L' Sleeves
4 mil ARCHIVAL POLYESTER

16-1/4 x 20-1/4"(outside dimensions)

These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints.

Base SKU: slv1620

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Polyester 'L' Sleeves for 18 x 24 prints.
18-1/4 x 24-1/4" (outside). 4 mil Polyester.
Sealed on 2 adjacent sides.
Polyester L-Sleeves for 18 x 24 prints
Description:
18 x 24" Print 'L' Sleeves
4 mil ARCHIVAL POLYESTER
18-1/4 x 24-1/4" (outside dimensions).

These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints when not in permanent storage.


Base SKU: slv1824

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Polyester 'L' Sleeves for 20 x 24" prints.
20-1/4 x 24-1/4" (outside). 4 mil Polyester.
Sealed on 2 adjacent sides.
Polyester L-Sleeves for 20 x 24" prints
Description:
20 x 24 Print 'L' Sleeves
4 mil ARCHIVAL POLYESTER
20-1/4 x 24-1/4" (outside dimensions).

These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints when not in permanent storage.


Base SKU: slv2024

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Polyester 'L' Sleeves for 24 x 30" prints.
24-1/2 x 30-1/2" (outside). 4 mil Polyester.
Sealed on 2 adjacent sides.
Polyester L-Sleeves for 24 x 30" prints
Description:
24 x 30" Print 'L' Sleeves
4 mil ARCHIVAL POLYESTER
24-1/2 x 30-1/2" (outside dimensions).

These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints when not in permanent storage.



Base SKU: slv2430

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Polyester (Mylar) L-Sleeve for Rock & Personality Posters.
20-1/2 x 28-1/2". 4 mil. NO flap.
Sealed on 2 adjacent sides.
<font color=810541> Rock & Personality Poster </font>
Description:
Rock & Personality Poster L-Sleeve
20-1/2 x 28-1/2" x 4mil Polyester (Mylar).
Sealed on 2 adjacent sides.

Base SKU: slvrpp

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Polyester 'L' Sleeves for 24 x 36" prints.
24-1/2 x 36-1/2" (outside). 4 mil Polyester.
Sealed on 2 adjacent sides.
Polyester L-Sleeves for <font color=810541>24 x 36" prints</font>
Description:
24 x 36 Print 'L' Sleeves for Standard Posters
4 mil ARCHIVAL POLYESTER
24-1/2 x 36-1/2" (outside dimensions).

These L-Seal Envelopes are made from crystal-clear archival Polyester, approved by the Library of Congress. Their rigidity (4 mil) and unique construction (two adjacent sealed sides) allows for quick/safe insertion and removal of photos/prints when not in permanent storage.



Base SKU: slv2436

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POLYESTER (Mylar) L-SLEEVES for Window Card Posters
14-1/2 x 22-1/2". 4 mil. NO flap.
Sealed on 2 adjacent sides.
Polyester L-SLEEVES for Posters
Description:
Window Card Poster L-Sleeve
14-1/2 x 22-1/2" x 4 mil Polyester (mylar)
Sealed on 2 adjacent sides.

Base SKU: slvwcp

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