Boxes & Mailers

SELECTION EXPERT ADVICE

Wall Strength & Load Capacity
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Match single-, double-, or triple-wall corrugated construction to your product weight to prevent in-transit damage and minimize costly returns.
Dimensional Weight Cost Control
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Right-sized boxes cut carrier DIM weight charges, selecting the optimal LxWxH for each SKU directly lowers your per-shipment freight cost.
Mailer Box vs. RSC: Choose Correctly
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Self-locking mailer boxes suit branded DTC shipments; traditional RSC corrugated boxes are ideal for palletized B2B and high-volume fulfillment.

Need help choosing boxes?

Pick the right corrugated box without overpaying for size or strength

Use these buying guides to size your box, compare board strength, and avoid dimensional weight surcharges.

Corrugated Boxes Guide → How to choose size, strength, and wall type Box Size Calculator → Find the smallest safe box for your product 32 ECT vs 200 lb Test → Which board strength rating fits your shipment
Overview

3,094 corrugated boxes, literature mailers and mailing tubes from 2 to 36 inches, mostly ECT-32 kraft and white, sold in bundles of 10 to 50. Each listing shows inside dimensions, board grade and bundle count so you can match a carton to the part you ship. 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

IN STOCK Protect critical documents and packing lists during shipment with these 7x6" red poly-faced envelopes. Each case contains 1,000 pre-adhesive backed envelopes that secure important papers directly to packages, ensuring compliance and visibility throughout transit.
Packing List Envelopes

7x6 Red Packing List Envelopes 1000/Case

PN: PL483

7 x 6 in 2 Mil Poly 1000 PER CASE
$78.08 / CASE
IN STOCK Secure important shipping documents with these 5x6" red packing list envelopes featuring adhesive backing and 2 mil poly construction. Each case contains 1,000 envelopes, providing reliable document protection and compliance-ready labeling. Designed for easy application directly to packages during fulfillment.
Packing List Envelopes

5x6 2 Mil Red Packing List Envelopes 1000/Case

PN: PL485

5 x 6 in 2 Mil Poly 1000 PER CASE
$78.08 / CASE
IN STOCK Protect critical documents during transit with these 7x6" red Important Papers Enclosed envelopes. Made from durable 2 mil poly with pressure-sensitive adhesive backing, they adhere securely to packages while remaining easy to apply. One case contains 1,000 envelopes–the efficient choice for high-volume shipping operations.
Packing List Envelopes

7x6 2 Mil Clear Self-Adhesive Packing List Envelopes 1000/Case

PN: PL414

7 x 6 in 2 Mil Poly 1000 PER CASE
$89.79 / CASE
IN STOCK Secure important documents during transit with these red 4.5x6 packing list envelopes. Made from durable 2 mil polyethylene with reliable adhesive backing, this case of 1000 envelopes meets shipping compliance requirements while protecting contents. Essential for e-commerce fulfillment, logistics, and warehouse operations.
Packing List Envelopes

4.5x6 Red Self-Adhesive Packing List Envelopes 1000/Case

PN: PL412

4 1/2 x 6 in 2 Mil Poly 1000 PER CASE
$34.70 / CASE
IN STOCK Protect critical documents during transit with these 4.5x6 orange "Important Papers Enclosed" envelopes. Constructed from durable 2 mil poly with adhesive backing to securely attach to packages. One case contains 1,000 envelopes–the cost-effective solution for high-volume shippers.
Packing List Envelopes

4.5x6 2 Mil Orange Packing List Envelopes 1000/Case PL410

PN: PL410

4 1/2 x 6 in 2 Mil Poly 1000 PER CASE
$46.24 / CASE
IN STOCK Crystal-clear 2 mil poly document envelopes sized 12x15" for maximum packing list visibility. Tamper-evident design protects documents while keeping shipping info readable. Sold by the case (500 units)–the dependable choice for high-volume e-commerce and 3PL operations.
Packing List Envelopes

12x15 2 Mil Clear Face Packing List Envelopes 500/Case

PN: PL527

12 x 15 in 2 Mil Poly 500 PER CASE
$162.53 / CASE
IN STOCK 10.75x6.75" Clear Face Document Envelopes, 2 Mil Poly - Case of 500
Packing List Envelopes

10.75x6.75 2 Mil Clear Face Packing List Envelopes 500/Case

PN: PL70

10 3/4 x 6.75 in 2 Mil Poly 500 PER CASE
$47.16 / CASE
IN STOCK 10x12 clear face document envelopes with transparent poly construction for instant document verification. 2 mil thickness provides tamper evidence and document protection. 500 envelopes per case–the reliable packing list solution for high-volume e-commerce and 3PL operations.
Packing List Envelopes

10x12 2 Mil Clear Self-Adhesive Packing List Envelopes 500/Case

PN: PL100

10 x 12 in 2 Mil Poly 500 PER CASE
$79.56 / CASE
IN STOCK See-through document envelopes that keep packing lists visible and protected. 9.5" x 12" clear poly construction in 2 mil thickness provides superior tamper evidence and durability. Sold by the case (500 units) for high-volume shipping and e-commerce operations.
Packing List Envelopes

9.5x12 2 Mil Clear Face Packing List Envelopes 500/Case

PN: PL478

9 1/2 x 12 in 2 Mil Poly 500 PER CASE
$74.98 / CASE
IN STOCK Transparent 2 mil poly envelopes designed for e-commerce, 3PL, and shipping operations that demand visible document tracking. The clear face allows packing lists and miscellaneous documents to be read instantly without opening, while tamper-proof adhesion keeps contents secure. Ships in cases of 1000 units–the efficient choice for high-volume mailing operations.
Packing List Envelopes

9.5x6 2 Mil Clear Tamper Proof Packing List Envelopes 1000/Case

PN: PL525

9 1/2 x 6 in 2 Mil Poly 1000 PER CASE
$83.36 / CASE
IN STOCK Transparent 2 mil poly document envelopes designed for e-commerce and 3PL operations. 9x14" clear face envelopes ensure packing lists and shipping documents remain visible and tamper-evident. Sold by the case of 500 units–reduce waste and protect your shipments simultaneously.
Packing List Envelopes

9x14 2 Mil Clear Self-Adhesive Packing List Envelopes 500/Case

PN: PL477

9 x 14 in 2 Mil Poly 500 PER CASE
$114.08 / CASE
IN STOCK Crystal-clear 2 mil poly document envelopes (7"x10") designed for e-commerce and 3PL operations. Contents remain fully visible through transparent face while tamper-evident construction protects critical paperwork during shipment. Case of 1000 envelopes ready to improve your fulfillment efficiency.
Packing List Envelopes

7x10 2 Mil Clear Tamper Proof Packing List Envelopes 1000/Case

PN: PL520

7 x 10 in 2 Mil Poly 1000 PER CASE
$96.08 / CASE
IN STOCK Transparent 7x6 document envelopes let customers see contents instantly while protecting with 2 mil tamper-proof poly. Ideal for packing lists, invoices, and shipping labels. 1000 envelopes per case.
Packing List Envelopes

7x6 2 Mil Clear Document Packing List Envelopes 1000/Case

PN: PL524

7 x 6 in 2 Mil Poly 1000 PER CASE
$80.59 / CASE
IN STOCK 7x5.5" Clear Face Document Envelopes, 2 Mil Poly - 1000/Case
Packing List Envelopes

7x5.5 2 Mil Clear Packing List Envelopes 1000/Case

PN: PL21

7 x 5.5 in 2 Mil Poly 1000 PER CASE
$46.97 / CASE
IN STOCK Get crystal-clear document visibility with our 6.5x10" clear face envelopes. 2 mil tamper-proof poly construction protects shipping documents while letting recipients read contents instantly without opening. Case of 1000 units–ideal for high-volume 3PL and e-commerce operations.
Packing List Envelopes

6.5x10 2 Mil Clear Self-Adhesive Packing List Envelopes 1000/Case

PN: PL476

6 1/2 x 10 in 2 Mil Poly 1000 PER CASE
$80.64 / CASE
IN STOCK Protect your packing lists and shipping documents with crystal-clear visibility. These 6.5" x 5.5" clear face envelopes feature 2 mil poly construction for superior tamper evidence and durability. Bulk case of 1,000 units designed for high-volume e-commerce and 3PL operations.
Packing List Envelopes

6.5x5.5 2 Mil Clear Face Packing List Envelopes 1000/Case

PN: PL523

6 1/2 x 5.5 in 2 Mil Poly 1000 PER CASE
$77.44 / CASE

Product Help Request

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

Buying path

Buy Boxes & 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 orders, send your list and ZIP and get a delivered price by email.

What to check first

  • Inside dimensions
  • Board grade or strength rating
  • Box style and closure
  • Case or bundle quantity
Common wrong-order risk: Choosing the outside size instead of the inside size. Confirm product fit, void fill, and storage space before ordering.
Use the box size finder -> Get a delivered quote for larger orders -> Compare corrugated box types -> View products below ->