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 10x7x5" ECT-32 Kraft Corrugated Boxes, 25-Pack
Boxes - Corrugated

10x7x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1075

10 x 7 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$17.70 / BUNDLE
IN STOCK ECT-32 kraft corrugated shipping boxes in 10" 7" 4" dimensions, sold as a convenient 25-pack bundle. Ideal for e-commerce fulfillment, small parcel shipping, and storage applications. Standard-strength construction delivers reliable performance at competitive pricing.
Boxes - Corrugated

10x7x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1074

10 x 7 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$15.91 / BUNDLE
IN STOCK 10x7x3 ECT-32 Kraft Corrugated Boxes - Shallow Depth Shipping, Bundle of 25
Boxes - Corrugated

10x7x3 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1073

10 x 7 x 3 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$30.26 / BUNDLE
IN STOCK ECT-32 single-wall kraft corrugated boxes sized 9"8"6" deliver proven strength for mid-weight product shipments. This 25-box bundle offers cost-effective protection with standard crush resistance, recyclable materials, and efficient stacking for warehouse operations.
Boxes - Corrugated

9x8x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 986

9 x 8 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$22.15 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes sized 9" x 8" x 4" for cost-effective mid-weight product shipping. Sold as a 25-pack bundle, these standard-strength cardboard boxes deliver reliable protection while maximizing your packaging efficiency and sustainability goals with 100% recyclable material.
Boxes - Corrugated

9x8x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 984

9 x 8 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$18.80 / BUNDLE
IN STOCK 12x5x5 Kraft Corrugated Shipping Boxes, 1,800 Pack Pallet, 32 ECT
Boxes - Corrugated

12x5x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1255

12 x 5 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$15.43 / BUNDLE
IN STOCK Ship smarter with these 11x6x6 corrugated shipping boxes engineered for industrial fulfillment. ECT-32 kraft material delivers proven stacking strength and freight efficiency in a 25-box bundle. Perfect for e-commerce, wholesale, and warehouse operations seeking reliable, recyclable packaging solutions.
Boxes - Corrugated

11x6x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1166

11 x 6 x 6 in ECT-32 Corrugated 25 PER BUNDLE
$18.31 / BUNDLE
IN STOCK Ship narrow items efficiently with these 11x6x4 corrugated boxes featuring long-side openings for fast packing. ECT-32 kraft construction delivers reliable protection at minimal cost per unit. Sold flat in bundles of 25–maximize your warehouse space and freight efficiency.
Boxes - Corrugated

11x6x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1164

11 x 6 x 4 in ECT-32 Corrugated 25 PER BUNDLE
$26.13 / BUNDLE
IN STOCK 10x7x9 Kraft Corrugated Shipping Boxes, 900 Pack Pallet, 32 ECT
Boxes - Corrugated

10x7x9 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1079

10 x 7 x 9 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$31.47 / BUNDLE
IN STOCK 9x8x8 Kraft Corrugated Shipping Boxes, 1,225 Pack Pallet, 32 ECT
Boxes - Corrugated

9x8x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 988

9 x 8 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$22.80 / BUNDLE
IN STOCK ECT-32 single wall corrugated boxes sized 8" 8" 9" deliver dependable crushing strength for mid-weight product shipping and warehouse storage. Kraft construction maximizes sustainability while meeting industrial performance standards. Sold in bundles of 25 for volume efficiency and cost savings.
Boxes - Corrugated

8x8x9 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 889

8 x 8 x 9 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$23.35 / BUNDLE
IN STOCK 7x7x10 Kraft Corrugated Shipping Boxes, 1,325 Pack Pallet, 32 ECT
Boxes - Corrugated

7x7x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 7710

7 x 7 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$20.89 / BUNDLE
IN STOCK Ship tall items with confidence using our 5x5x12 corrugated boxes made from durable ECT-32 kraft material. Designed for end-loading convenience and reliable stacking performance. Sold as a 25-box bundle, shipped flat for maximum freight efficiency.
Boxes - Corrugated

5x5x12 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 5512

5 x 5 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$26.99 / BUNDLE
IN STOCK Heavy-duty ECT-44 single wall kraft corrugated boxes deliver 40% greater stacking strength than standard shipping containers. Optimize your fulfillment operations with these 12" x 6" x 6" cartons, sold in bundles of 25 and shipped flat for maximum freight efficiency.
Boxes - Corrugated

12x6x6 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 25-Pack

PN: HD1266

12 x 6 x 6 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$26.09 / BUNDLE
IN STOCK Heavy-duty ECT-32 kraft corrugated shipping boxes sized 12" x 6" x 8" for efficient packing and protection. Sold as a bundle of 25 cartons. Ideal for warehouses and fulfillment centers seeking reliable, cost-effective packaging that maximizes freight efficiency without compromising product safety.
Boxes - Corrugated

12x6x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1268

12 x 6 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$23.08 / BUNDLE
IN STOCK Fold-flat multi-depth corrugated boxes that adjust from 6" to your desired height–no carton sizer needed. Pre-scored kraft construction in ECT-32 single-wall material. Bundle of 25 units lets you consolidate inventory and optimize parcel spend with one SKU.
Boxes - Corrugated

12x6x6 ECT-32 Multi-Depth Kraft Corrugated Shipping Boxes 25-Pack

PN: MD1266

12 x 6 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$20.52 / 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

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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 ->