Poly Mailers

IN STOCK Professional-grade 20x24x4 expansion poly mailers built for e-commerce brands shipping books, binders, and catalogs. Features self-seal closure with tear strip, puncture-resistant 2.5 mil polyethylene, and gusseted design for thicker items. Sold by the case of 100.
Envelopes & Mailers

20x24x4 2.5 Mil White Self-Seal Poly Mailers 100/Case

PN: EPM20244

20 x 24 x 4 in 2.5 Mil Polyethylene 100 PER CASE
$59.96 / CASE
IN STOCK 10x13
Envelopes & Mailers

10x13 2.5 Mil Clear Self-Seal Poly Mailers 100/Case

PN: CV1013100PK

10 x 13 in 2.5 Mil Polyethylene 100 PER CASE
$25.97 / CASE
IN STOCK 19x24 50% PCR Non-Perforated Lip Poly Mailers 200/Case B1924N - alias listing
Envelopes & Mailers

19x24 50% PCR Non-Perforated Lip Poly Mailers 200/Case B1924N

PN: B1924N

24 x 19 in 200 PER CASE
$92.76 / CASE
IN STOCK 24x24 Perforated Self Sealing Poly Mailers B5120 - alias listing
Envelopes & Mailers

24x24 Perforated Self Sealing Poly Mailers B5120

PN: B5120

24 x 24 in
$94.81 / CASE
IN STOCK 4.75x6.5 Clear View Poly Mailers B13210 - alias listing
Envelopes & Mailers

4.75x6.5 Clear View Poly Mailers B13210

PN: B13210

6.5 x 4.75 in
$26.94 / CASE
IN STOCK 14.5x19 Perforated Lip Poly Mailer. 50% PCR 500/Case B14519 - alias listing
Envelopes & Mailers

14.5x19 Perforated Lip Poly Mailer. 50% PCR 500/Case B14519

PN: B14519

19 x 14.5 in 500 PER CASE
$149.33 / CASE
IN STOCK 14.5x19 Non Perforated Lip Poly Mailer. 50% PCR 500/Case B14519N - alias listing
Envelopes & Mailers

14.5x19 Non Perforated Lip Poly Mailer. 50% PCR 500/Case B14519N

PN: B14519N

19 x 14.5 in 500 PER CASE
$154.22 / CASE
IN STOCK 12x15.5 50% PCR Non-Perforated Lip Poly Mailers 500/Case B12155N - alias listing
Envelopes & Mailers

12x15.5 50% PCR Non-Perforated Lip Poly Mailers 500/Case B12155N

PN: B12155N

15.5 x 12 in 500 PER CASE
$105.79 / CASE
IN STOCK 19x24 Poly Mailers 200-Pack B5117 - alias listing
Envelopes & Mailers

19x24 Poly Mailers 200-Pack B5117

PN: B5117

24 x 19 in 200 PER PACK
$72.85 / CASE
IN STOCK 12x15.5 50% PCR Perforated Lip Poly Mailers 500/Case B12155 - alias listing
Envelopes & Mailers

12x15.5 50% PCR Perforated Lip Poly Mailers 500/Case B12155

PN: B12155

15.5 x 12 in 500 PER CASE
$105.79 / CASE
IN STOCK 6x9 2.5 Mil Non-Perforated Lip Poly Mailers B5150 - alias listing
Envelopes & Mailers

6x9 2.5 Mil Non-Perforated Lip Poly Mailers B5150

PN: B5150

9 x 6 in 2.5 Mil
$42.13 / CASE
IN STOCK 10x13 50% PCR Non-Perforated Lip Poly Mailers 1000/Case B1013N - alias listing
Envelopes & Mailers

10x13 50% PCR Non-Perforated Lip Poly Mailers 1000/Case B1013N

PN: B1013N

13 x 10 in 1000 PER CASE
$155.45 / CASE
IN STOCK 10x13 50% PCR Perforated Lip Poly Mailers 1000/Case B1013 - alias listing
Envelopes & Mailers

10x13 50% PCR Perforated Lip Poly Mailers 1000/Case B1013

PN: B1013

13 x 10 in 1000 PER CASE
$161.28 / CASE
IN STOCK 19x24 2.5 Mil Self-Seal Returnable Poly Mailers 100/Case RPM1924 - alias listing
Envelopes & Mailers

19x24 2.5 Mil Self-Seal Returnable Poly Mailers 100/Case RPM1924

PN: RPM1924

19 x 24 in 2.5 Mil Polyethylene 100 PER CASE
$58.47 / CASE
IN STOCK 14x17 2.5 Mil White Poly Mailers 100/Case RPM1417 - alias listing
Envelopes & Mailers

14x17 2.5 Mil White Poly Mailers 100/Case RPM1417

PN: RPM1417

14 x 17 in 2.5 Mil Polyethylene 100 PER CASE
$31.66 / CASE
IN STOCK 24x24 5 Mil Self-Seal Poly Mailers 125/Case B878 - alias listing
Envelopes & Mailers

24x24 2.5 Mil Self-Seal Poly Mailers 125/Case B878

PN: B878

24 x 24 in 2.5 Mil Polyethylene 125 PER CASE
$64.64 / CASE
IN STOCK 12x15.5 2.5 Mil Poly Mailers 100/Case RPM1215 - alias listing
Envelopes & Mailers

12x15.5 2.5 Mil Poly Mailers 100/Case RPM1215

PN: RPM1215

12 x 15 1/2 in 2.5 Mil Polyethylene 100 PER CASE
$26.86 / CASE
IN STOCK 19x24 5 Mil Self-Seal Poly Mailers 125/Case B877 - alias listing
Envelopes & Mailers

19x24 2.5 Mil Self-Seal Poly Mailers 125/Case B877

PN: B877

19 x 24 in 2.5 Mil Polyethylene 125 PER CASE
$51.12 / CASE
IN STOCK 19x14.5 5 Mil White Self-Seal Poly Mailers 250/Case B876 - alias listing
Envelopes & Mailers

19x14.5 2.5 Mil White Self-Seal Poly Mailers 250/Case B876

PN: B876

19 x 14.5 in 2.5 Mil Polyethylene 250 PER CASE
$63.15 / CASE
IN STOCK 12x15.5 5 Mil Self-Seal Poly Mailers 500/Case B870 - alias listing
Envelopes & Mailers

12x15.5 2.5 Mil Self-Seal Poly Mailers 500/Case B870

PN: B870

12 x 15 1/2 in 2.5 Mil Polyethylene 500 PER CASE
$93.04 / CASE
IN STOCK 10x13 2.5 Mil White Self-Seal Poly Mailers 1000/Case B867 - alias listing
Envelopes & Mailers

10x13 2.5 Mil White Self-Seal Poly Mailers 1000/Case B867

PN: B867

10 x 13 in 2.5 Mil Polyethylene 1000 PER CASE
$133.67 / CASE
IN STOCK 9x12 5 Mil Self-Seal Poly Mailers 1000/Case B869 - alias listing
Envelopes & Mailers

9x12 2.5 Mil Self-Seal Poly Mailers 1000/Case B869

PN: B869

9 x 12 in 2.5 Mil Polyethylene 1000 PER CASE
$115.70 / CASE
IN STOCK 24x36 2.5 Mil White Self-Seal Tear Strip Poly Mailers 200/Case B913 - alias listing
Envelopes & Mailers

24x36 2.5 Mil White Self-Seal Tear Strip Poly Mailers 200/Case B913

PN: B913

24 x 36 in 2.5 Mil Polyethylene 200 PER CASE
$230.39 / CASE
IN STOCK 24x24 White Self-Seal Tear Strip Poly Mailers 200/Case B912 - alias listing
Envelopes & Mailers

24x24 White Self-Seal Tear Strip Poly Mailers 200/Case B912

PN: B912

24 x 24 in 2.5 Mil Polyethylene 200 PER CASE
$115.10 / CASE
IN STOCK 19x24 2.5 Mil Self-Seal Poly Mailers 250/Case B911 - alias listing
Envelopes & Mailers

19x24 2.5 Mil Self-Seal Poly Mailers 250/Case B911

PN: B911

19 x 24 in 2.5 Mil Polyethylene 250 PER CASE
$114.37 / CASE
IN STOCK 10x13 2.5 Mil White Self-Seal Tear Strip Poly Mailers 500/Case B874 - alias listing
Envelopes & Mailers

10x13 2.5 Mil White Self-Seal Tear Strip Poly Mailers 500/Case B874

PN: B874

10 x 13 in 2.5 Mil Polyethylene 500 PER CASE
$63.86 / CASE
IN STOCK 14x17 2.5 Mil White Self-Seal Poly Mailers 500/Case B879 - alias listing
Envelopes & Mailers

14x17 2.5 Mil White Self-Seal Poly Mailers 500/Case B879

PN: B879

14 x 17 in 2.5 Mil Polyethylene 500 PER CASE
$118.90 / CASE
IN STOCK 9x12 5 Mil White Self-Seal Tear Strip Poly Mailers 500/Case B873 - alias listing
Envelopes & Mailers

9x12 2.5 Mil White Self-Seal Tear Strip Poly Mailers 500/Case B873

PN: B873

9 x 12 in 2.5 Mil Polyethylene 500 PER CASE
$54.33 / CASE
IN STOCK 6x9 5 Mil Self-Seal Tear Strip Poly Mailers 1000/Case B871 - alias listing
Envelopes & Mailers

6x9 2.5 Mil Self-Seal Tear Strip Poly Mailers 1000/Case B871

PN: B871

6 x 9 in 2.5 Mil Polyethylene 1000 PER CASE
$57.89 / CASE
IN STOCK 24x24 5 Mil Self-Seal Poly Mailers 100-Pack B878100PK - alias listing
Envelopes & Mailers

24x24 2.5 Mil Self-Seal Poly Mailers 100-Pack B878100PK

PN: B878100PK

24 x 24 in 2.5 Mil Polyethylene 100 PER CASE
$90.16 / CASE
IN STOCK 36x24 2.5 Mil White Self-Seal Poly Mailers 100/Case B880100PK - alias listing
Envelopes & Mailers

36x24 2.5 Mil White Self-Seal Poly Mailers 100/Case B880100PK

PN: B880100PK

36 x 24 in 2.5 Mil Polyethylene 100 PER CASE
$170.29 / CASE
IN STOCK 14x17 2.5 Mil Self-Seal Tear Strip Poly Mailers 100-Pack B879100PK - alias listing
Envelopes & Mailers

14x17 2.5 Mil Self-Seal Tear Strip Poly Mailers 100-Pack B879100PK

PN: B879100PK

14 x 17 in 2.5 Mil Polyethylene 100 PER CASE
$39.25 / CASE
IN STOCK 14.5x19 White Self-Seal Poly Mailers 100-Pack B876100PK - alias listing
Envelopes & Mailers

14.5x19 White Self-Seal Poly Mailers 100-Pack B876100PK

PN: B876100PK

14 1/2 x 19 in 2.5 Mil Polyethylene 100 PER CASE
$46.07 / CASE
IN STOCK 12x15.5 5 Mil Self-Seal Poly Mailers 50-Pack B87550PK - alias listing
Envelopes & Mailers

12x15.5 2.5 Mil Self-Seal Poly Mailers 50-Pack B87550PK

PN: B87550PK

12 x 15 1/2 in 2.5 Mil Polyethylene 50 PER CASE
$17.47 / CASE
IN STOCK 12x15.5 5 Mil Self-Seal Poly Mailers 100-Pack B875100PK - alias listing
Envelopes & Mailers

12x15.5 2.5 Mil Self-Seal Poly Mailers 100-Pack B875100PK

PN: B875100PK

12 x 15 1/2 in 2.5 Mil Polyethylene 100 PER CASE
$27.51 / CASE
IN STOCK 7.5x10.5 5 Mil Self-Seal Tear Strip Poly Mailers 100-Pack B872100PK - alias listing
Envelopes & Mailers

7.5x10.5 2.5 Mil Self-Seal Tear Strip Poly Mailers 100-Pack B872100PK

PN: B872100PK

7 1/2 x 10 1/2 in 2.5 Mil Polyethylene 100 PER CASE
$18.64 / CASE
IN STOCK 9x12 5 Mil Self-Seal Poly Mailers 100-Pack B873100PK - alias listing
Envelopes & Mailers

9x12 2.5 Mil Self-Seal Poly Mailers 100-Pack B873100PK

PN: B873100PK

9 x 12 in 2.5 Mil Polyethylene 100 PER CASE
$21.59 / CASE
IN STOCK 6x9 Self-Seal Poly Mailers 100-Pack B871100PK - alias listing
Envelopes & Mailers

6x9 Self-Seal Poly Mailers 100-Pack B871100PK

PN: B871100PK

6 x 9 in 2.5 Mil Polyethylene 100 PER CASE
$16.68 / CASE
IN STOCK 18x51 4 Mil Self-Seal Poly Mailers 25/Case LPM1851 - alias listing
Envelopes & Mailers

18x51 4 Mil Self-Seal Poly Mailers 25/Case LPM1851

PN: LPM1851

18 x 51 in Polyethylene 25 PER CASE
$52.05 / CASE
IN STOCK 18x48 4 Mil White Self-Seal Poly Mailers 25/Case LPM1848 - alias listing
Envelopes & Mailers

18x48 4 Mil White Self-Seal Poly Mailers 25/Case LPM1848

PN: LPM1848

18 x 48 in Polyethylene 25 PER CASE
$45.30 / CASE
IN STOCK 13x45 2.5 Mil Self-Seal Poly Mailers 50/Case LPM1345 - alias listing
Envelopes & Mailers

13x45 2.5 Mil Self-Seal Poly Mailers 50/Case LPM1345

PN: LPM1345

13 x 45 in 2.5 Mil Polyethylene 50 PER CASE
$65.74 / CASE
IN STOCK 9.5x45 2.5 Mil White Self-Seal Poly Mailers 50/Case LPM945 - alias listing
Envelopes & Mailers

9.5x45 2.5 Mil White Self-Seal Poly Mailers 50/Case LPM945

PN: LPM945

9 1/2 x 45 in 2.5 Mil Polyethylene 50 PER CASE
$48.07 / CASE
IN STOCK 8.5x33 2.5 Mil White Self-Seal Poly Mailers 100/Case LPM833 - alias listing
Envelopes & Mailers

8.5x33 2.5 Mil White Self-Seal Poly Mailers 100/Case LPM833

PN: LPM833

8 1/2 x 33 in 2.5 Mil Polyethylene 100 PER CASE
$71.28 / CASE
IN STOCK 6x39 2.5 Mil White Self-Seal Poly Mailers 100/Case LPM639 - alias listing
Envelopes & Mailers

6x39 2.5 Mil White Self-Seal Poly Mailers 100/Case LPM639

PN: LPM639

6 x 39 in 2.5 Mil Polyethylene 100 PER CASE
$69.07 / CASE
IN STOCK 26x28x5 2.5 Mil White Self-Seal Poly Mailers 100/Case EPM26285 - alias listing
Envelopes & Mailers

26x28x5 2.5 Mil White Self-Seal Poly Mailers 100/Case EPM26285

PN: EPM26285

26 x 28 x 5 in 2.5 Mil Polyethylene 100 PER CASE
$84.62 / CASE
IN STOCK 13x16x4 2.5 Mil White Self-Seal Poly Mailers 100/Case EPM13164 - alias listing
Envelopes & Mailers

13x16x4 2.5 Mil White Self-Seal Poly Mailers 100/Case EPM13164

PN: EPM13164

13 x 16 x 4 in 2.5 Mil Polyethylene 100 PER CASE
$28.11 / CASE
IN STOCK 15x20x4 2.5 Mil Self-Seal Poly Mailers 100/Case EPM15204 - alias listing
Envelopes & Mailers

15x20x4 2.5 Mil Self-Seal Poly Mailers 100/Case EPM15204

PN: EPM15204

15 x 20 x 4 in 2.5 Mil Polyethylene 100 PER CASE
$37.43 / CASE
IN STOCK 13x16x2 2.5 Mil White Self-Seal Poly Mailers 100/Case EPM13162 - alias listing
Envelopes & Mailers

13x16x2 2.5 Mil White Self-Seal Poly Mailers 100/Case EPM13162

PN: EPM13162

13 x 16 x 2 in 2.5 Mil Polyethylene 100 PER CASE
$32.54 / CASE

Product Help Request

Send the SKU, quantity, delivery ZIP, and any required specs so we can route the request.

Overview

69 poly mailers from 6x9 to 36 inches: 2.5, 4 and 5 mil self-seal in white, clear and colors, with expansion and returnable styles, 25 to 1,000 per case. Size, mil and mailers per case are on each listing. Orders ship from five US regional warehouses; for mixed or recurring orders use the bulk quote path with SKU, quantity and destination ZIP.

Related collections

Buying path

Buy Poly Mailers by the specs that change the order

Use filters, product titles, and product pages to compare size, material, pack count, case quantity, and fit before ordering.

Compare

Use filters and product titles to narrow by the specs that affect fit.

Confirm

Open the product page before ordering a case so you can check quantity, unit, and limits.

Reorder

Save the SKU or product link for repeat purchasing and support questions.

Larger orders

For pallet, recurring, or mixed-SKU needs, send support the details before placing a large order.

What to check first

  • Usable inside size
  • Mil thickness
  • Closure type
  • Case quantity
Common wrong-order risk: Using a poly mailer for items that need edge protection. Confirm the item is soft or protected before choosing a flexible mailer.
Compare mailer vs box -> Contact support for larger orders -> Shop poly bags -> View products below ->