First Day Cover Sleeves

Collection Protection Supplies

1-800-767-2247

Our First Day Cover Sleeves come in 2 materials:
• Polyethylene for Long-term Storage

• Polyester (Mylar) for Indefinite Storage
For Poly material specifications click here.

The Backings for these sleeves also come in 2 materials:

• .028" thick Acid-free Board for Long-term Storage
• .040" thick Acid-free, Lignin-free, Buffered Board for Indefinite Storage
For Backing material specifications click here.

We have added a new style of Polyester sleeves called 'Folder' Sleeves which are sealed on one long side only. The inherent static in polyester material, keeps the stored image securely in place.

First Day Cover Sleeves. 4 x 6-3/4".
2.5 mil Polyethylene.
Fits U.S cover - # 6 envelope.
Long-term Storage.
SKU: sfdcus6

First Day Cover Sleeves.
3-15/16 x 6-7/8".
2 mil Polypropylene.
Fits U.S cover # 6 envelope.
**IN STOCK**
SKU: sppfdcus6

Backings for First Day Covers.
U.S. Cover #6.
3-3/4 x 6-5/8".
.028" thick Acid-Free Board.
Long-term Storage.
SKU: kaf28us6

Backings for First Day Covers.
U.S. Cover #6.
3-3/4 x 6-5/8".
.040" thick Acid-Free Board.
Indefinite Storage.
SKU: kaf40us6

First Day Cover US #6 envelope. 'Folder' Sleeve.
3-7/8 x 6-7/8". 4 mil POLYESTER.
Indefinite Storage.
SKU: sfdcus6petf

Backings for First Day Covers.
U.S. Cover #6.
3-5/8 x 6-3/4".
.028" thick Acid-Free Board.
Long-term Storage.
(Sleeve :SFDCUS6PETF)
SKU: kaf28us6pet

Backings for First Day Covers.
U.S. Cover #6.
3-5/8 x 6-3/4".
.040" thick Acid-Free Board.
Indefinite Storage.
(Sleeve :SFDCUS6PETF)
SKU: kaf40us6pet

First Day Cover Sleeves.
4-1/2 x 9-7/8". 2.5 mil Polyethylene.
Fits U.S cover - # 10 envelope.
Long-term Storage.
SKU: sfdcus10

First Day Cover Sleeves
4-1/4 x 9-5/8". 2.0 mil Polypropylene.
Fits U.S. Cover #10 envelope.
Long-term Storage.
SKU: sppfdcus10

First Day Cover
US #10 Envelope 'Folder' Sleeve.
4-1/2 x 9-7/8". 4 mil Polyester.
Sealed on one long side.
Indefinite Storage.
SKU: sfdcus10petf

Backings for First Day Covers.
U.S. Cover #10 Envelope.
4-1/4 x 9-3/4".
.028" thick Acid Free Board.
Long-term Storage.
SKU: kaf28us10

Backings for First Day Covers.
U.S. Cover #10 Envelope.
4-1/4 x 9-3/4".
.0240" thick Acid Free Board.
Indefinite Storage.
SKU: kaf40us10

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