Mylar Sheets

Collection Protection Supplies

Use Polyester (PET) Sheets for matboard windows, encapsulating irregular sizes, interleaving or any archival application. Archival polyester will not discolor, damage, or adhere to items placed in it or next to it. This polyester material is approved by the Library of Congress for safe indefinite-term storage. We use DuPont inert Melinex® or a suitable equivalent.

For safe encapsulation, use acid-free double-sided transparent tape.

Scroll down for sheet sizes and pricing.

Polyester (mylar) SHEETS
11-5/8 x 17-9/16" x 4 mil.
Use for indefinite storage.

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Description:	Museum Grade Archival Polyester (Mylar) Sheets 11-5/8 x 17-9/16" 4 mil Use polyester sheets as windows for framed pictures, encapsulating irregular sizes, interleaving or any archival application. Our polyester is approved by the Library of Congress for Indefinite Storage. Note: For polyester sleeves see Product Code: S1117R.
Base SKU:	pet11174
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Polyester (mylar) SHEETS
14-7/8 x 22-13/16" " x 4 mil.
Use for indefinite storage.

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Description:	Museum Grade Archival Polyester (Mylar) Sheets 14-7/8 x 22-13/16" 4 mil Use polyester sheets as windows for framed pictures, encapsulating irregular sizes, interleaving or any archival application. Our polyester is approved by the Library of Congress for Indefinite Storage. Note: For polyester sleeves see Product Code: s1422R
Base SKU:	pet14224
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Polyester (mylar) SHEETS
15-5/8 x 18-9/16" x 4 mil.
Use for indefinite storage.

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Description:	Museum Grade Archival Polyester (Mylar) Sheets 15-5/8 x 18-9/16" 4 mil Use polyester sheets as windows for framed pictures, encapsulating irregular sizes, interleaving or any archival application. Our polyester is approved by the Library of Congress for Indefinite Storage. Note: For polyester sleeves see Product Code: S1518R.
Base SKU:	pet15182
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Polyester (mylar) SHEETS
17-5/8 x 21-9/16" x 4 mil.
Use for indefinite storage.

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Description:	Museum Grade Archival Polyester (Mylar) Sheets 17-5/8 x 21-9/16" 4 mil Use polyester sheets as windows for framed pictures, encapsulating irregular sizes, interleaving or any archival application. Our polyester is approved by the Library of Congress for Indefinite Storage. Note: For polyester sleeves see Product Code: S1721R.
Base SKU:	pet17214
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Polyester (mylar) SHEETS
18-5/8 x 24-9/16" x 4 mil.
Use for indefinite storage.

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Description:	Museum Grade Archival Polyester (Mylar) Sheets 18-5/8 x 24-9/16" 4 mil Use polyester sheets as windows for framed pictures, encapsulating irregular sizes, interleaving or any archival application. Our polyester is approved by the Library of Congress for Indefinite Storage. Note: For polyester sleeves see Product Code: S1824R.
Base SKU:	pet18244
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Polyester (mylar) SHEETS
22-15/16 x 28-13/16" x 4 mil.
Use for indefinite storage.

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Description:	Museum Grade Archival Polyester (Mylar) Sheets 22-15/16 x 28-13/16" 4 mil Use polyester sheets as windows for framed pictures, encapsulating irregular sizes, interleaving or any archival application. Our polyester is approved by the Library of Congress for Indefinite Storage.
Base SKU:	pet22284
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Polyester (mylar) SHEETS
26-9/16 x 36-5/8" x 4 mil.
Use for indefinite storage.

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Description:	Museum Grade Archival Polyester (Mylar) Sheets 26-9/16 x 36-5/8" 4 mil Use polyester sheets as windows for framed pictures, encapsulating irregular sizes, interleaving or any archival application. Our polyester is approved by the Library of Congress for Indefinite Storage.
Base SKU:	pet26364
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Polyester (mylar) SHEETS
27-15/16 x 41-5/16" x 4 mil.
Use for indefinite storage.

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Description:	Museum Grade Archival Polyester (Mylar) Sheets 27-15/16 x 41-5/16" 4 mil Use polyester sheets as windows for framed pictures, encapsulating irregular sizes, interleaving or any archival application. Our polyester is approved by the Library of Congress for Indefinite Storage. Note: For polyester sleeves see Product Code: S2741R
Base SKU:	pet27414
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