Sponsored Products
JAM Paper 4Bar A1 Invitation Envelopes, 3.625 x 5.125, White, 50/Pack (47385H)~#|#~sp111772467_sc7JAM Paper 4Bar A1 Invitation Envelopes, 3.625 x 5.125, White, 50/Pack (47385H)~#|#~sp111772466_sc7
Item: 2329312
Model: 47385H
Price is $13.49
Unit of measure 50/Pack
Delivery by Thu, Oct 23
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 5 x 5 Square Envelopes, 50/Box, Natural (8505-03-50)~#|#~m000081529_sc7
Item: 282162
Model: 8505-03-50
No reviews yet
Price is $13.59
Unit of measure 50/Pack
Delivery by Mon, Oct 27
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 A8 Invitation Envelopes (5 1/2 x 8 1/8) 50/Pack, Gold Metallic (4885-07-50)~#|#~sp12274947_sc7LUX A8 Invitation Envelopes (5 1/2 x 8 1/8) 50/Pack, Gold Metallic (4885-07-50)~#|#~sp12275045_sc7
Item: 24161719
Model: 4885-07-50
No reviews yet
Price is $41.59
Unit of measure 50/Pack
Free delivery by Mon, Oct 27
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 Open End Kraft Catalog Envelopes, 15" x 20", Brown Kraft, 25/Box (QUA42355)~#|#~sp42804966_sc7Quality Park Open End Kraft Catalog Envelopes, 15" x 20", Brown Kraft, 25/Box (QUA42355)~#|#~sp42804965_sc7
Item: 507902
Model: QUA42355
No reviews yet
Price is $65.59
Unit of measure 25/Box
Free delivery by Tue, Oct 21
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, White, 25/Pack (4023981)~#|#~sp121512191_sc7JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, White, 25/Pack (4023981)~#|#~sp121512190_sc7
Item: 365989
Model: 4023981
Price is $9.89
Unit of measure 25/Pack
Delivery by Thu, Oct 23
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 9.5 x 12.625 Booklet Commercial Envelopes, White, 100/Pack (953454B)~#|#~m003904734_sc7JAM Paper 9.5 x 12.625 Booklet Commercial Envelopes, White, 100/Pack (953454B)~#|#~m003904508_sc7
Item: 263761
Model: 953454B
No reviews yet
Price is $43.09
Unit of measure 100/Box
Free delivery by Thu, Oct 23
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 Booklet Envelope 4 3/4" x 6 1/2", White, 100/Box (QUA36417)~#|#~s0198925_sc7
Item: 507771
Model: QUA36417
Price is $51.39
Unit of measure 100/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
LUX 7 1/2 x 10 1/2 Booklet Envelopes 50/Pack, 24lb. Bright White (12252-50)~#|#~sp14807339_sc7
Item: 24261328
Model: 12252-50
No reviews yet
Price is $17.29
Unit of measure 50/Pack
Delivery by Mon, Oct 27
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 EasyClose Kraft Catalog Envelopes, 10"L x 13"H, Brown, 250/Box (479889/14238)~#|#~s1224562_sc7Staples EasyClose Kraft Catalog Envelopes, 10"L x 13"H, Brown, 250/Box (479889/14238)~#|#~s1224561_sc7
Item: 479889
Model: ST479889-CC
Price is $71.09
Unit of measure 250/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
LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, 70lb. Bright White (20677-250)~#|#~m000081998_sc7
Item: 515446
Model: 20677-250
No reviews yet
Price is $100.19
Free delivery by Mon, Oct 27
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 Open End Envelope 6" x 11.5", Bright White~#|#~m001406660_sc7
Item: 1277751
Model: 61112-70W-50
Price is $76.89
Unit of measure 50/Pack
Free delivery by Mon, Oct 27
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 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Wisteria Purple, 250/BX~#|#~m004940493_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Wisteria Purple, 250/BX~#|#~m005824014_sc7
Item: 388501
Model: LUX-4860-106-25
Price is $89.49
Unit of measure 250/Box
Free delivery by Mon, Oct 27
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 Envelope, 4 3/8" x 5 3/4", White, 1000/Pack (MOOP6250LDB)~#|#~m003904592_sc7JAM Paper A2 Invitation Envelope, 4 3/8" x 5 3/4", White, 1000/Pack (MOOP6250LDB)~#|#~m003904591_sc7
Item: 366205
Model: MOOP6250LDB
Price is $127.49
Unit of measure 1000/Pack
Free delivery by Thu, Oct 23
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
Quality Park Unsealed Kraft Catalog Envelope, 22" x 17", Kraft, 25/Box (42356)~#|#~s0171336_sc7Quality Park Unsealed Kraft Catalog Envelope, 22" x 17", Kraft, 25/Box (42356)~#|#~s0288244_sc7
Item: 377341
Model: QUA42356
Price is $86.09
Unit of measure 25/Box
Free delivery by Tue, Oct 21
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 Clasp & Moistenable Glue Kraft Catalog Envelopes, 4" x 6.38", Brown Kraft, 100/Box (QUA37815)~#|#~sp42116464_sc7Quality Park Clasp & Moistenable Glue Kraft Catalog Envelopes, 4" x 6.38", Brown Kraft, 100/Box (QUA37815)~#|#~sp42116463_sc7
Item: 513229
Model: QUA37815
Price is $65.29
Unit of measure 100/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 A2 Strathmore Invitation Envelopes, 4.375 x 5.75, Bright White Wove, 25/Pack (191151)~#|#~sp112110294_sc7JAM Paper A2 Strathmore Invitation Envelopes, 4.375 x 5.75, Bright White Wove, 25/Pack (191151)~#|#~sp112110293_sc7
Item: 262523
Model: 191151
Price is $11.49
Unit of measure 25/Pack
Delivery by Thu, Oct 23
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 5 1/2 x 8 1/2 Booklet Envelopes 50/Pack, 24lb. Bright White (49420-50)~#|#~sp14807389_sc7
Item: 24261177
Model: 49420-50
Price is $15.79
Unit of measure 50/Pack
Delivery by Mon, Oct 27
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 Open End Catalog Envelopes, Black, 100/Pack (87733)~#|#~B1D4FB9C-0CB6-4AC4-A48115CC37369FA3_sc7JAM Paper 10 x 13 Open End Catalog Envelopes, Black, 100/Pack (87733)~#|#~BEF8D724-0DA6-4440-8ADC3B053171968F_sc7
Item: 261785
Model: 87733
Price is $63.49
Unit of measure 100/Box
Free delivery by Thu, Oct 23
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 A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Navy (LUX-4880-103-50)~#|#~m005902344_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Navy (LUX-4880-103-50)~#|#~m005823963_sc7
Item: 282797
Model: LUX-4880-103-50
Price is $22.59
Unit of measure 50/Pack
Delivery by Mon, Oct 27
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 15 Open End Catalog Envelopes, White, 50/Pack (1623200i)~#|#~sp61031462_sc7JAM Paper 10 x 15 Open End Catalog Envelopes, White, 50/Pack (1623200i)~#|#~sp61031302_sc7
Item: 24006121
Model: 1623200I
No reviews yet
Price is $42.99
Unit of measure 50/Pack
Free delivery by Thu, Oct 23
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, Natural White Wove, 25/Pack (44507)~#|#~m007159137_sc7JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Natural White Wove, 25/Pack (44507)~#|#~m007159136_sc7
Item: 263994
Model: 44507
No reviews yet
Price is $12.69
Unit of measure 25/Pack
Delivery by Thu, Oct 23
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 Button & String Inter-Departmental Envelope 10" x 13", Yellow, 100/Carton (QUA63576)~#|#~sp42126945_sc7Quality Park Button & String Inter-Departmental Envelope 10" x 13", Yellow, 100/Carton (QUA63576)~#|#~sp42126944_sc7
Item: 912032
Model: QUA63576
Price is $132.39
Unit of measure 100/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
Quality Park Kraft Button & String Inter-Departmental Envelope 10" x 13", Brown, 100/Box (QUA63562)~#|#~sp42179896_sc7Quality Park Kraft Button & String Inter-Departmental Envelope 10" x 13", Brown, 100/Box (QUA63562)~#|#~sp42179895_sc7
Item: 377355
Model: QUA63562
Price is $104.29
Unit of measure 100/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 A6 Strathmore Invitation Envelopes, 4.75 x 6.5, Natural White Wove, 25/Pack (30243)~#|#~m007159123_sc7JAM Paper A6 Strathmore Invitation Envelopes, 4.75 x 6.5, Natural White Wove, 25/Pack (30243)~#|#~m007159122_sc7
JAM Paper A6 Strathmore Invitation Envelopes, 4.75 x 6.5, Natural White Wove, 25/Pack (30243) is Out of stock
Item: 263993
Model: 30243
No reviews yet
Price is $10.89
Unit of measure 25/Pack
JAM Paper 9.5 x 12.5 Open End Catalog Envelopes with Peel and Seal Closure, White, 50/Pack (356828781i)~#|#~sp11854810_sc7JAM Paper 9.5 x 12.5 Open End Catalog Envelopes with Peel and Seal Closure, White, 50/Pack (356828781i)~#|#~sp11854809_sc7
JAM Paper 9.5 x 12.5 Open End Catalog Envelopes with Peel and Seal Closure, White, 50/Pack (356828781i) is Out of stock
Item: 24145250
Model: 356828781I
No reviews yet
Price is $37.19
Unit of measure 50/Pack
JAM Paper Self Seal Catalog Envelope, 9" x 12", Blue, 100/Pack (188047509D)~#|#~4D0B8291-0669-4FF8-B52AC22780649FCC_sc7
JAM Paper Self Seal Catalog Envelope, 9" x 12", Blue, 100/Pack (188047509D) is Out of stock
Item: 24557917
Model: 188047509D
No reviews yet
Price is $73.39
Unit of measure 100/Pack
LUX #10 Window Envelopes, 4 1/8" x 9 1/2", 24 lb. White, Machine Insertable, 250 Qty (28460-MI-250)~#|#~m004064026_sc7
LUX #10 Window Envelopes, 4 1/8" x 9 1/2", 24 lb. White, Machine Insertable, 250 Qty (28460-MI-250) is Out of stock
Item: 2146394
Model: 28460-MI-250
No reviews yet
Price is $56.69
Unit of measure 250/Pack
JAM Paper Booklet Envelope, 6" x 9", White, 25/Pack (4238)~#|#~sp124925524_sc7JAM Paper Booklet Envelope, 6" x 9", White, 25/Pack (4238)~#|#~sp124925523_sc7
JAM Paper Booklet Envelope, 6" x 9", White, 25/Pack (4238) is Out of stock
Item: 366031
Model: 4238
Price is $13.59
Unit of measure 25/Pack
LUX 9 x 12 Booklet Envelopes 50/Pack, White w/ Peel & Seel (14554-50)~#|#~sp14807564_sc7
LUX 9 x 12 Booklet Envelopes 50/Pack, White w/ Peel & Seel (14554-50) is Out of stock
Item: 24260278
Model: 14554-50
No reviews yet
Price is $29.39
Unit of measure 50/Pack
LUX Self Seal #10 Window Envelope, 4 1/2" x 9 1/2", White Wove, 50/Pack (10APW-WW-50)~#|#~sp5822112_sc7LUX Self Seal #10 Window Envelope, 4 1/2" x 9 1/2", White Wove, 50/Pack (10APW-WW-50)~#|#~sp5875295_sc7
LUX Self Seal #10 Window Envelope, 4 1/2" x 9 1/2", White Wove, 50/Pack (10APW-WW-50) is Out of stock
Item: 23995735
Model: 10APW-WW-50
No reviews yet
Price is $42.69
Unit of measure 50/Pack
LUX 80lb 4 1/8"x9 1/2" Square Flap #10 Envelopes, Smoke Gray, 500/BX~#|#~m000161299_sc7
LUX 80lb 4 1/8"x9 1/2" Square Flap #10 Envelopes, Smoke Gray, 500/BX is Out of stock
Item: 516408
Model: EX4860-22-500
Price is $137.99
Universal Self Seal Catalog Envelope, 10" x 13", White, 100/Box (UNV19007)~#|#~s0379884_sc7
Universal Self Seal Catalog Envelope, 10" x 13", White, 100/Box (UNV19007) is Out of stock
Item: UNV19007
Model: UNV19007
No reviews yet
Price is $79.99
Unit of measure 100/Box
JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Green Recycled, Bulk 250/Box (67195H)~#|#~m003904610_sc7JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Green Recycled, Bulk 250/Box (67195H)~#|#~m003904609_sc7
JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Green Recycled, Bulk 250/Box (67195H) is Out of stock
Item: 1589029
Model: 67195H
No reviews yet
Price is $82.89
Unit of measure 250/Box
LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Quartz Metallic (5380-08-50)~#|#~21E69E6B-67C1-4CDB-BDEE1D60B1EB8306_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Quartz Metallic (5380-08-50)~#|#~ED7D13CC-8813-4FB0-90E95A042E40DE83_sc7
LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Quartz Metallic (5380-08-50) is Out of stock
Item: 282816
Model: 5380-08-50
No reviews yet
Price is $19.99
Unit of measure 50/Pack
There is something about a square flap on an envelope that denotes importance. It is no wonder then that many significant invitations and announcements are packaged in just such a wrapper. But don't make the mistake of thinking these classic mailers are just for personal use. Businesses can make a similar statement by choosing a square-flapped envelope, with or without a clear window. Peruse the dozens of options available from leading office supply brands like JAM Paper, LUX, and Staples.

Narrow Your Choices
Selecting a business envelope can be more daunting than you think. While it is nice to have choices, narrowing them down can be difficult. Square-flapped envelopes are available in dimensions ranging from 3 1/2" x 6" (the smallest commercial size available) to jumbo 13" x 19" mailers and everything in between, including the standard #10 envelope. As for color? Depending on your needs, 17 different color choices beckon, some with address windows, some without.

Not Quite Done Yet
You've determined your specific needs when it comes to color and size in a square-flapped envelope, but you're not quite done yet. Depending on what you are mailing, you may or may not need clear address windows. If you do need a window, how many and where should they be? Single left, single right, and double left windows are the most popular choices but not the only ones. A full-faced over-sized clear center window is also an option for special mailing projects.

Almost There
It should be apparent by now that the "one size fits all" days of business envelopes are long gone. As are the days when licking or using a sponge to seal them was the only choice. Yes, the old-school sealants are still available, but many other options are, too. Choose redi-seal strips that require no moisture or convenient peel-and-stick closures. Now that you have chosen your square envelope, purchase in packs of as few as 20 or as many as 1,000.