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 9x4x3 Kraft Corrugated Shipping Boxes, 1,450 Pack Pallet, 32 ECT
Boxes - Corrugated

9x4x3 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 943

9 x 4 x 3 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$19.35 / BUNDLE
IN STOCK Reliable ECT-32 kraft corrugated shipping boxes measuring 8" 5" 5" sold in bundles of 25. Designed for standard warehouse and fulfillment operations with proven stacking strength. Recyclable material reduces environmental impact while maintaining structural integrity for mid-weight items.
Boxes - Corrugated

8x5x5 ECT-32 Kraft Corrugated Boxes 25-Pack

PN: 855

8 x 5 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$12.04 / BUNDLE
IN STOCK ECT-32 single-wall kraft corrugated boxes in 8x5x3" dimensions deliver proven strength for small-item fulfillment. Ships flat to maximize warehouse efficiency and reduce freight spend. Order by the 25-pack bundle and optimize your shipping costs today.
Boxes - Corrugated

8x5x3 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 853

8 x 5 x 3 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$19.88 / BUNDLE
IN STOCK 7x6x4 Kraft Corrugated Boxes, 1,750 Pack Pallet, 32 ECT
Boxes - Corrugated

7x6x4 ECT-32 Kraft Corrugated Boxes 25-Pack

PN: 764

7 x 6 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$16.01 / BUNDLE
IN STOCK 11 1/8 x 2 x 8 3/4" ECT-32 Self-Seal Side Loading Box - Bundle of 25
Boxes - Corrugated

11.125x2x8.75 ECT-32 Shipping Boxes 25-Pack

PN: 1128SSFOL

11 1/8 x 2 x 8 3/4 in ECT-32 Corrugated 25 PER BUNDLE
$84.51 / BUNDLE
IN STOCK Engineered for maximum warehouse efficiency, these 9.25" x 3" x 6.75" self seal side loading corrugated boxes feature ECT-32 single wall construction with proven stacking strength. Ships flat in bundles of 25 to reduce storage footprint and freight costs. Industry-standard performance you can rely on for fast order fulfillment.
Boxes - Corrugated

9.25x3x6.75 ECT-32 Self Seal Side Loading Boxes 25-Pack

PN: 936SSFOL

9 1/4 x 3 x 6 3/4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$77.50 / BUNDLE
IN STOCK ECT-32 kraft corrugated cartons designed for wine bottles, umbrellas, carpet rolls, and other elongated products. Long-side openings enable rapid packing and efficient loading. Sold flat in bundles of 25 boxes for maximum freight efficiency and volume savings.
Boxes - Corrugated

9x4x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 944

9 x 4 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$15.86 / BUNDLE
IN STOCK 8x5x4 Kraft Corrugated Shipping Boxes, 2,200 Pack Pallet, 32 ECT
Boxes - Corrugated

8x5x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 854

8 x 5 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$12.56 / BUNDLE
IN STOCK 7x6x6 Kraft Corrugated Shipping Boxes, 1,875 Pack Pallet, 32 ECT
Boxes - Corrugated

7x6x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 766

7 x 6 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$14.77 / BUNDLE
IN STOCK Reliable ECT-32 single-wall corrugated boxes in 6x6x7" dimensions designed for standard shipping and storage applications. Kraft material offers proven durability for warehouse and fulfillment operations. Sold in bundles of 25 boxes–optimize your packaging costs with bulk ordering.
Boxes - Corrugated

6x6x7 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 667

6 x 6 x 7 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$21.68 / BUNDLE
IN STOCK ECT-32 single-wall corrugated boxes in 5x5x8 dimensions deliver proven stacking strength for warehouse operations and mid-weight shipping. This 25-pack kraft carton bundle maximizes freight efficiency while maintaining structural integrity through the supply chain. Recyclable material reduces environmental impact without compromising performance.
Boxes - Corrugated

5x5x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 558

5 x 5 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$19.74 / BUNDLE
IN STOCK 10x4x4 Kraft Corrugated Shipping Boxes, 2,150 Pack Pallet, 32 ECT
Boxes - Corrugated

10x4x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1044

10 x 4 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$12.97 / BUNDLE
IN STOCK Pre-scored multi-depth corrugated boxes that fold to your exact size without a carton sizer–eliminating inventory SKUs and slashing parcel shipping costs. Built from sturdy ECT-32 kraft corrugated with scored sides at multiple depths for perfect-fit packing every time. Ships in bundles of 25.
Boxes - Corrugated

9x5x5 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 25-Pack

PN: MD955

9 x 5 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$14.72 / BUNDLE
IN STOCK 9x5x5 Kraft Corrugated Shipping Boxes, 2,325 Pack Pallet, 32 ECT
Boxes - Corrugated

9x5x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 955

9 x 5 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$11.90 / BUNDLE
IN STOCK Economical 8x6x6 corrugated shipping boxes built from ECT-32 kraft material for standard industrial use. This 25-box bundle delivers dependable stacking strength and sustainable packaging at volume pricing. Ideal for e-commerce fulfillment, warehouse storage, and light-to-medium product distribution.
Boxes - Corrugated

8x6x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 866

8 x 6 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$14.56 / BUNDLE
IN STOCK 8x6x5 Kraft Corrugated Shipping Boxes, 2,000 Pack Pallet, 32 ECT
Boxes - Corrugated

8x6x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 865

8 x 6 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$13.92 / BUNDLE

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 ->