JAM Paper A8 Booklet Envelope 5 1/2" x 8 1/8", Bright White Wove, 100/Pack (STTW761d)~#|#~CC151525-6CD9-41DF-9FC232B210F2AE1D_sc7JAM Paper A8 Booklet Envelope 5 1/2" x 8 1/8", Bright White Wove, 100/Pack (STTW761d)~#|#~9C56D578-0D62-440A-B9A34CEEADB02122_sc7
Item: 24604452
Model: STTW761d
No reviews yet
Price is $26.99
Unit of measure 100/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Staples Gummed #11 Business Envelopes, 4 1/2" x 10 3/8", Brown, 500/Box (SPL535153)~#|#~116716BE-64A4-40B1-88ACA195C97CF442_sc7Staples Gummed #11 Business Envelopes, 4 1/2" x 10 3/8", Brown, 500/Box (SPL535153)~#|#~EB833F90-2B71-41CC-ABAF0DC55BB6ED16_sc7
Item: 535153
Model: ST50171-CC
Price is $56.49
Unit of measure 500/Box
Free Next-Day eligible by tomorrow
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper #6 3/4 Business Envelope, 3 5/8" x 6 1/2", White, 50/Pack (1633983C)~#|#~sp115352137_sc7JAM Paper #6 3/4 Business Envelope, 3 5/8" x 6 1/2", White, 50/Pack (1633983C)~#|#~sp115352136_sc7
Item: 2329450
Model: 1633983C
Price is $11.09
Unit of measure 50/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Quality Park Gummed Security Tinted Business Envelopes, 4 1/2" x 9 1/2", White Wove, 500/Box (QUA21432)~#|#~sp40319158_sc7
Quality Park Gummed Security Tinted Business Envelopes, 4 1/2" x 9 1/2", White Wove, 500/Box (QUA21432) is Backorder
Item: 668699
Model: QUA21432-A
Price is $147.59
Unit of measure 500/Box
Free delivery by Fri, Jan 30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper #14 Business Envelope, 5" x 11 1/2", White, 25/Pack (53273)~#|#~m002934530_sc7JAM Paper #14 Business Envelope, 5" x 11 1/2", White, 25/Pack (53273)~#|#~m002934529_sc7
Item: 367873
Model: 53273
Price is $9.89
Unit of measure 25/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper #14 Kraft Business Commercial Envelope, 5" x 11 1/2", Brown Kraft, 25/Pack (1633182)~#|#~sp111772374_sc7JAM Paper #14 Kraft Business Commercial Envelope, 5" x 11 1/2", Brown Kraft, 25/Pack (1633182)~#|#~sp111772373_sc7
Item: 367892
Model: 1633182
Price is $14.89
Unit of measure 25/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 50/Pack (3984I)~#|#~sp111772303_sc7JAM Paper #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 50/Pack (3984I)~#|#~sp111772302_sc7
Item: 24295335
Model: 3984I
Price is $14.39
Unit of measure 50/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Red Recycled, 50/Pack (67503I)~#|#~sp115352048_sc7JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Red Recycled, 50/Pack (67503I)~#|#~sp115352047_sc7
Item: 1588941
Model: 67503I
No reviews yet
Price is $15.89
Unit of measure 50/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Blue, 50/Pack (155630I)~#|#~m003904710_sc7JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Blue, 50/Pack (155630I)~#|#~m003904709_sc7
Item: 1589138
Model: 155630I
No reviews yet
Price is $25.29
Unit of measure 50/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper A2 Colored Invitation Envelopes, 4 3/8" x 5 3/4", Ultra Lime Green, Bulk 1000/Carton (WDBH610B)~#|#~m003905272_sc7JAM Paper A2 Colored Invitation Envelopes, 4 3/8" x 5 3/4", Ultra Lime Green, Bulk 1000/Carton (WDBH610B)~#|#~m003905271_sc7
Item: 261164
Model: WDBH610B
No reviews yet
Price is $227.99
Unit of measure 1000/Carton
Free delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper #12 Business Commercial Envelope, 4 3/4" x 11", White, 50/Pack (45195I)~#|#~sp111772463_sc7JAM Paper #12 Business Commercial Envelope, 4 3/4" x 11", White, 50/Pack (45195I)~#|#~sp111772462_sc7
Item: 1588529
Model: 45195I
Price is $20.49
Unit of measure 50/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Bright White Linen, Bulk 250/Box (191189H)~#|#~m007159173_sc7JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Bright White Linen, Bulk 250/Box (191189H)~#|#~m007159172_sc7
Item: 1590130
Model: 191189H
No reviews yet
Price is $73.29
Unit of measure 250/Box
Free delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Quality Park Security Tinted #10 Window Envelope 4 1/8" x 9 1/2", White, 500/Box (QUA21412)~#|#~s0171235_sc7
Item: 377516
Model: QUA21412
No reviews yet
Price is $94.29
Unit of measure 500/Box
Free delivery by Wed, Dec 17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper #1 Coin Business Colored Envelopes, 2.25 x 3.5, Red Recycled, 25/Pack (356730632)~#|#~sp121512417_sc7JAM Paper #1 Coin Business Colored Envelopes, 2.25 x 3.5, Red Recycled, 25/Pack (356730632)~#|#~sp121512416_sc7
Item: 2103507
Model: 356730632
Price is $10.29
Unit of measure 25/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper #4 Kraft Coin Envelope, 3" x 4 1/2", Brown Kraft, 100/Pack (356731206B)~#|#~m004543255_sc7JAM Paper #4 Kraft Coin Envelope, 3" x 4 1/2", Brown Kraft, 100/Pack (356731206B)~#|#~m004543254_sc7
Item: 2329364
Model: 356731206B
Price is $14.89
Unit of measure 100/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper #1 Coin Business Envelopes, 2.25 x 3.5, Black, 25/Pack (352527801)~#|#~sp121512218_sc7JAM Paper #1 Coin Business Envelopes, 2.25 x 3.5, Black, 25/Pack (352527801)~#|#~sp121512217_sc7
Item: 1433771
Model: 352527801
Price is $11.49
Unit of measure 25/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, Ecru with Gold Foil, 50/Pack (2354150I)~#|#~sp137086016_sc7
Item: 1589213
Model: 2354150I
No reviews yet
Price is $36.49
Unit of measure 50/Pack
Free delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper #7 Coin Business Colored Envelopes, 3.5 x 6.5, Ultra Fuchsia Pink, Bulk 500/Box (1526767H)~#|#~m003184166_sc7
Item: 2103178
Model: 1526767H
No reviews yet
Price is $172.79
Unit of measure 500/Box
Free delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper 8.5 x 8.5 Square Invitation Envelopes, White, Bulk 250/Box (4231H)~#|#~sp121512322_sc7JAM Paper 8.5 x 8.5 Square Invitation Envelopes, White, Bulk 250/Box (4231H)~#|#~sp121512320_sc7
Item: 1589832
Model: 4231H
No reviews yet
Price is $131.19
Unit of measure 250/Box
Free delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper A2 Strathmore Invitation Envelopes, 4.375 x 5.75, Bright White Wove, Bulk 250/Box (191151H)~#|#~sp112110294_sc7JAM Paper A2 Strathmore Invitation Envelopes, 4.375 x 5.75, Bright White Wove, Bulk 250/Box (191151H)~#|#~sp112110293_sc7
Item: 1589305
Model: 191151H
No reviews yet
Price is $78.99
Unit of measure 250/Box
Free delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper® 10 x 13 Booklet Envelopes, White, 50/Pack (4023222A)~#|#~sp111772382_sc7JAM Paper® 10 x 13 Booklet Envelopes, White, 50/Pack (4023222A)~#|#~sp111772381_sc7
Item: 24365109
Model: 4023222A
Price is $26.19
Unit of measure 50/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper A6 Invitation Envelope, 4 7/5" x 6 1/2", Brown Kraft Recycled, 100/Pack (63134660D)~#|#~28AF4BEC-A811-4758-B2ED359CF2A2B900_sc7
Item: 24557864
Model: 63134660D
No reviews yet
Price is $37.29
Unit of measure 100/Pack
Free delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper A2 Booklet Envelope 4 3/8" x 5 3/4", Natural White Linen, 100/Pack (99761d)~#|#~D11E428B-7EE6-4ED8-B59178AC278D96B6_sc7
Item: 24604455
Model: 99761d
Price is $22.99
Unit of measure 100/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper Booklet Envelope 6 1/2" x 9 1/2", White, 100/Pack (4241d)~#|#~9FD89DEF-DAEF-42B0-B96210AAD982A8FC_sc7JAM Paper Booklet Envelope 6 1/2" x 9 1/2", White, 100/Pack (4241d)~#|#~CEF071F1-4FC1-4161-ACA56AD4BEE2A311_sc7
Item: 24604539
Model: 4241d
No reviews yet
Price is $18.99
Unit of measure 100/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, 25/Pack (28417)~#|#~sp129636458_sc7JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, 25/Pack (28417)~#|#~sp129636457_sc7
Item: 261303
Model: 28417
Price is $25.89
Unit of measure 25/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
LUX 24# Small Drive-In Banking Envelopes, 3 1/4"H x 7"W, White, 1000/PK (SDI-24WW-1000)~#|#~m003307906_sc7
Item: 1985106
Model: SDI-24WW-1000
No reviews yet
Price is $202.59
Unit of measure 1000/Box
Free delivery by Fri, Dec 19
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper A10 Strathmore Invitation Envelopes, 6 x 9.5, Bright White Wove, 50/Pack (191220I)~#|#~m007159183_sc7JAM Paper A10 Strathmore Invitation Envelopes, 6 x 9.5, Bright White Wove, 50/Pack (191220I)~#|#~m007159182_sc7
Item: 1588774
Model: 191220I
No reviews yet
Price is $31.29
Unit of measure 50/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Quality Park Gummed #10 Business Envelopes, 4 1/8" x 9 1/2", White Wove, 1000/Carton (QUA90020B)~#|#~sp40322437_sc7Quality Park Gummed #10 Business Envelopes, 4 1/8" x 9 1/2", White Wove, 1000/Carton (QUA90020B)~#|#~sp40322435_sc7
Item: 812435
Model: QUA90020B
Price is $90.19
Unit of measure 1000/Carton
Free Next-Day eligible by tomorrow
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Dark Green, 50/Pack (21514959I)~#|#~A674BC30-B71C-46BF-9F820C4A9D1CB744_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Dark Green, 50/Pack (21514959I)~#|#~7B341DCC-3850-41A6-9A3D4193869C758E_sc7
Item: 2633062
Model: 21514959I
No reviews yet
Price is $29.99
Unit of measure 50/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper 3Drug Mini Recycled Kraft Envelopes, 2.3125 x 3.625, Brown Kraft Paper Bag, 25/Pack (5207691)~#|#~sp123307721_sc7JAM Paper 3Drug Mini Recycled Kraft Envelopes, 2.3125 x 3.625, Brown Kraft Paper Bag, 25/Pack (5207691)~#|#~sp123307720_sc7
Item: 261524
Model: 5207691
No reviews yet
Price is $17.09
Unit of measure 25/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Dark Red, 25/Pack (31511305)~#|#~m002934216_sc7JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Dark Red, 25/Pack (31511305)~#|#~m002934215_sc7
Item: 261399
Model: 31511305
Price is $12.09
Unit of measure 25/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Bright White Linen, 50/Pack (191189I)~#|#~m007159173_sc7JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Bright White Linen, 50/Pack (191189I)~#|#~m007159172_sc7
Item: 1589608
Model: 191189I
Price is $20.49
Unit of measure 50/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper 11.5" x 11.5" Large Square Invitation Envelopes, White, 50/Pack (3992321I)~#|#~sp118566184_sc7JAM Paper 11.5" x 11.5" Large Square Invitation Envelopes, White, 50/Pack (3992321I)~#|#~sp118566189_sc7
Item: 1588470
Model: 3992321I
No reviews yet
Price is $72.39
Unit of measure 50/Pack
Free delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper Mini Commercial Envelopes, 2.75 x 3.75, White, 50/Pack (201246i)~#|#~sp121512639_sc7JAM Paper Mini Commercial Envelopes, 2.75 x 3.75, White, 50/Pack (201246i)~#|#~sp121512445_sc7
Item: 24295040
Model: 201246I
No reviews yet
Price is $20.49
Unit of measure 50/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper #7 Coin Business Colored Envelopes, 3.5 x 6.5, Ultra Fuchsia Pink, 25/Pack (1526767)~#|#~sp137086227_sc7
Item: 1227749
Model: 1526767
No reviews yet
Price is $11.49
Unit of measure 25/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper 7.5 x 10.5 Booklet Commercial Envelopes, White, 25/Pack (4246)~#|#~sp112110472_sc7JAM Paper 7.5 x 10.5 Booklet Commercial Envelopes, White, 25/Pack (4246)~#|#~sp112110461_sc7
Item: 366120
Model: 4246
Price is $9.59
Unit of measure 25/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper Currency Envelope, 3" x 6 11/16", White, 250/Box (216313691I)~#|#~sp137086240_sc7
Item: 2633147
Model: 216313691I
Price is $65.39
Unit of measure 250/Box
Free delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper #4.5 Coin Envelopes 3" x 4 7/8", White, 50 Pack (94839-50)~#|#~E6DA669D-36FF-478B-8AB9595EBCAD2CE6_sc7
Item: 24604638
Model: 94839-50
No reviews yet
Price is $24.90
Unit of measure 50/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
JAM Paper #5 Coin Envelopes 2 7/8" x 5 1/4", White, 100/Pack (16211217d)~#|#~B41A610E-51BF-4ED4-9D660EF32ED60E79_sc7JAM Paper #5 Coin Envelopes 2 7/8" x 5 1/4", White, 100/Pack (16211217d)~#|#~F97D59B5-440A-4110-AFD31B4C3E481B6E_sc7
Item: 24604658
Model: 16211217d
No reviews yet
Price is $14.99
Unit of measure 100/Pack
Delivery by Tue, Dec 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Quality Park Kraft #1 Envelope 2 1/4" x 3 1/2", Light Brown, 500/Box (QUA50160)~#|#~sp48117216_sc7Quality Park Kraft #1 Envelope 2 1/4" x 3 1/2", Light Brown, 500/Box (QUA50160)~#|#~6878D824-4573-4A6E-B61F23C1D87957B8_sc7
Item: 827898
Model: QUA50160
Price is $44.19
Unit of measure 500/Box
Free Next-Day eligible by tomorrow
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30

Trending now

Page 1 of 4
Strong and secure, gummed envelopes allow you to seal your communications with ease simply by licking or moistening the gummed closure using a sponge. Perfect for single as well as multiple mailings, these standard office supplies are a must-have for anyone who makes multiple runs to the mailbox or post office each week. The windows on the front reveal your recipient’s address, your address, or both, saving you money spent on separate labels or time spent on hand-addressing your communications.

Multiple Options & Sizes
If you’re sending standard-size letters, larger legal documents, small invitations, or something else entirely, our line of gummed plain window envelopes likely has something to accommodate them. Available in numerous sizes and colors and manufactured by highly regarded names including LUX, JAM Paper, and Quality Park, among others, these essential mailings supplies are durable, versatile, and secure. Their windowed openings on the front reveal the names and addresses printed inside, making them well-suited for professional use.

Numerous Professional Uses
When you have to prepare mass mailings, gummed plain window envelopes have the potential to save you time as well as money. Preparing monthly invoices, statements, or promotional materials requires a lot of labeling or hand-addressing, but you can skip both efforts by using gummed plain window envelopes that have the address information already printed on the document inside.

Single- and Double-Window Envelopes
You have options when it comes to window envelopes, so whether you want yours to reveal your recipient’s address, the return address, or both, our line of gummed window envelopes has something to fit the bill. Gummed closures help your letters and communications stay private and secure, while the windows on the front eliminate the need for addressing or labeling them yourself.