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 shipping documents with our 4.5x5.5" packing list envelopes made from heavy-duty 2 mil polypropylene. Pre-printed with USA flag design and hot melt adhesive backing for secure adhesion to corrugated boxes. Case of 1000 delivers cost-effective compliance for high-volume operations.
Packing List Envelopes

4.5x5.5 2 Mil Packing List Envelopes 1000/Case PL465

PN: PL465

4 1/2 x 5.5 in 2 Mil Poly 1000 PER CASE
$36.36 / CASE
IN STOCK Protect shipping documents with patriotic style. These 4.5x5.5" packing list envelopes feature heavy 2 mil poly construction and hot melt adhesive backing for secure adhesion to corrugated boxes and paper. Case of 1000 keeps costs low and compliance high.
Packing List Envelopes

4.5x5.5 2 Mil Packing List Envelopes 1000/Case PLUSA12

PN: PLUSA12

4 1/2 x 5.5 in 2 Mil Poly 1000 PER CASE
$32.36 / CASE
IN STOCK Heavy-duty 4.5x5.5" packing list envelopes with hot melt adhesive backing for secure document protection during shipping. Pre-printed with patriotic USA design on durable 2 mil polypropylene. Sold by the case (1000 envelopes) for maximum cost efficiency.
Packing List Envelopes

4.5x5.5 2 Mil Packing List Envelopes 1000/Case PL466

PN: PL466

4 1/2 x 5.5 in 2 Mil Poly 1000 PER CASE
$45.12 / CASE
IN STOCK Protect and organize critical shipping documents with these heavy-duty 5.5x10 red export envelopes. Pre-printed with specialty messages and backed with hot melt adhesive for strong, reliable adhesion to paper and corrugated. Sold by the case (1000 envelopes) for maximum efficiency.
Packing List Envelopes

5.5x10 2 Mil Red Document Packing List Envelopes 1000/Case

PN: PL440

5 1/2 x 10 in 2 Mil Poly 1000 PER CASE
$99.42 / CASE
IN STOCK Protect and organize shipping documents with these 6x11 pre-printed packing list envelopes made from durable 2 mil poly. Hot melt adhesive backing bonds securely to paper and corrugated surfaces for reliable attachment during transit. Case of 1,000 envelopes gives your warehouse consistent, compliance-ready shipping solutions at scale.
Packing List Envelopes

6x11 Packing List Envelopes 1000/Case

PN: PL511

6 x 11 in 2 Mil Poly 1000 PER CASE
$136.04 / CASE
IN STOCK Pre-printed yellow document envelopes designed for hazardous waste shipping compliance. Heavy 2 mil poly construction with hot melt adhesive backing securely adheres to corrugated boxes and paper surfaces. Ships 1,000 envelopes per case for cost-effective bulk ordering.
Packing List Envelopes

5.5x10 2 Mil Yellow Document Packing List Envelopes 1000/Case

PN: PL482

5 1/2 x 10 in 2 Mil Poly 1000 PER CASE
$103.31 / CASE
IN STOCK Professional 5.5x10 packing list envelopes pre-printed with compliance text and built for durability. Heavy 2 mil poly construction with hot melt adhesive backing secures documents to corrugated shipments. Case of 1,000 envelopes reduces per-unit costs and keeps your operation stocked.
Packing List Envelopes

5.5x10 2 Mil Black Packing List Envelopes 1000/Case

PN: PL97

5 1/2 x 10 in 2 Mil Poly 1000 PER CASE
$99.42 / CASE
IN STOCK Adhesive-backed 2 mil poly packing list envelopes designed to protect and organize shipping documents. 12" x 10" orange envelopes with reliable adhesion to cartons, packages, and various surfaces. Sold by the case of 500 for maximum cost efficiency.
Packing List Envelopes

12x10 2 Mil Orange Packing List Envelopes 500/Case

PN: PL479

12 x 10 in 2 Mil Poly 500 PER CASE
$133.95 / CASE
IN STOCK 10x12" Red 2 Mil Poly Packing List Envelopes - 500/Case
Packing List Envelopes

10x12 2 Mil Red Packing List Envelopes 500/Case

PN: PL437

10 x 12 in 2 Mil Poly 500 PER CASE
$133.95 / CASE
IN STOCK 10x12" Orange 2 Mil Poly Packing List Envelopes - 500/Case
Packing List Envelopes

10x12 2 Mil Orange Packing List Envelopes 500/Case

PN: PL449

10 x 12 in 2 Mil Poly 500 PER CASE
$133.95 / CASE
IN STOCK Keep shipping documents secure and organized with these durable 7.5x5.5" yellow poly packing list envelopes. Featuring 2 mil adhesive-backed construction, this case of 1000 envelopes adheres reliably to a variety of surfaces while protecting contents during transit.
Packing List Envelopes

7.5x5.5 2 Mil Yellow Self-Adhesive Packing List Envelopes 1000/Case

PN: PL448

7 1/2 x 5.5 in 2 Mil Poly 1000 PER CASE
$75.35 / CASE
IN STOCK Keep shipping documents secure and visible with these 5.5x10" red packing list envelopes. Durable 2 mil polyethylene construction with strong adhesive backing adheres reliably to boxes, packages, and mixed surfaces. Case of 1,000 units delivers cost-efficient bulk protection for high-volume shippers.
Packing List Envelopes

5.5x10 2 Mil Red Packing List Envelopes

PN: PL492

5 1/2 x 10 in 2 Mil Poly 1000 PER CASE
$99.42 / CASE
IN STOCK Protect critical shipping documents with our 5.5x10" red "Documents Enclosed" envelopes. Heavy-duty 2 mil polyethylene with strong adhesive backing adheres to virtually any surface. Case of 1,000 envelopes delivers cost-effective compliance for high-volume shipping operations.
Packing List Envelopes

5.5x10 2 Mil Red Self-Adhesive Packing List Envelopes 1000/Case

PN: PL436

5 1/2 x 10 in 2 Mil Poly 1000 PER CASE
$99.42 / CASE
IN STOCK Industrial-grade red packing list envelopes designed to protect and display shipping documents, customs papers, and miscellaneous shipment information. These 5.5" x 10" adhesive-backed envelopes feature 2 mil polyethylene construction for reliable durability and weather resistance. Sold by the case of 1,000 units.
Packing List Envelopes

5.5x10 2 Mil Red Packing List Envelopes 1000/Case

PN: PL447

5 1/2 x 10 in 2 Mil Poly 1000 PER CASE
$99.42 / CASE
IN STOCK Professional-grade 5.5" x 10" packing list envelopes designed for industrial shipping and document protection. Constructed from durable 2 mil poly with strong adhesive backing that adheres reliably to boxes and packages. Buy by the case of 1,000 for maximum cost-efficiency.
Packing List Envelopes

5.5x10 2 Mil Orange Packing List Envelopes 1000/Case

PN: PL450

5 1/2 x 10 in 2 Mil Poly 1000 PER CASE
$99.42 / CASE
IN STOCK Protect important documents during shipment with these durable 5.25" x 7.5" orange adhesive-backed envelopes. Made from 2 mil poly material, they adhere reliably to boxes, packages, and various surfaces. Case of 1,000 envelopes provides cost-effective document management for high-volume shippers.
Packing List Envelopes

5.25x7.5 2 Mil Clear Self-Adhesive Packing List Envelopes 1000/Case

PN: PL421

5 1/4 x 7.5 in 2 Mil Poly 1000 PER CASE
$75.35 / 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 ->