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 ECT-32 single wall kraft corrugated boxes in 28" x 16" x 12" dimensions deliver reliable stacking strength for mid-weight industrial shipments. Sold as a bundle of 10 shipping cartons, these brown corrugated boxes provide cost-effective protection with proven performance. Fully recyclable kraft construction reduces environmental impact while maintaining durability.
Boxes - Corrugated

28x16x12 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 281612

28 x 16 x 12 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$35.28 / BUNDLE
IN STOCK ECT-32 single wall corrugated boxes built for industrial shipping and warehouse storage. These 28" x 16" x 10" kraft cartons deliver reliable stacking strength in a convenient bundle of 20. Recyclable, cost-effective solution for fulfillment centers and distribution operations.
Boxes - Corrugated

28x16x10 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 281610

28 x 16 x 10 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$65.41 / BUNDLE
IN STOCK ECT-32 kraft corrugated shipping boxes sized 28" × 16" × 7" for shallow products and lightweight items. Ships flat in bundles of 20 to maximize warehouse efficiency and reduce freight spend. Ideal for apparel, books, frames, artwork, and mirrors.
Boxes - Corrugated

28x16x7 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 28167

28 x 16 x 7 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$60.11 / BUNDLE
IN STOCK Eliminate carton sizing complexity with pre-scored multi-depth corrugated boxes that fold to your exact dimensions. These ECT-32 kraft shipping cartons reduce inventory SKU count and parcel shipping costs by letting you right-size every box. Bundle of 10 boxes delivers immediate cost savings for warehouse and fulfillment operations.
Boxes - Corrugated

26x18x16 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 10-Pack

PN: MD261816

26 x 18 x 16 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$44.21 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes in 26x18x16" dimensions deliver proven industrial strength for high-volume shipping and storage operations. Sold as a convenient bundle of 10 cartons, these recyclable cardboard boxes maximize freight efficiency while maintaining reliable stacking performance. Perfect for warehouse managers and fulfillment centers seeking dependable, cost-effective packaging solutions.
Boxes - Corrugated

26x18x16 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 261816

26 x 18 x 16 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$40.80 / BUNDLE
IN STOCK Industrial-grade 26x18x14" corrugated boxes engineered for reliable stacking and freight efficiency. ECT-32 kraft construction delivers consistent performance in high-volume fulfillment operations. Bulk bundle of 10 boxes reduces per-unit costs and minimizes packaging waste.
Boxes - Corrugated

26x18x14 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 261814

26 x 18 x 14 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$42.92 / BUNDLE
IN STOCK ECT-32 single wall corrugated boxes sized 26" × 18" × 12" deliver proven stacking performance for mid-weight shipping and storage. Each bundle includes 15 kraft cartons, reducing per-unit costs and minimizing freight spend. Built for warehouse efficiency and recyclable sustainability.
Boxes - Corrugated

26x18x12 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 261812

26 x 18 x 12 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$54.14 / BUNDLE
IN STOCK ECT-32 single-wall kraft corrugated boxes in 26x18x10" dimensions–ideal for mid-size shipping, storage, and fulfillment operations. Bundle of 15 boxes delivers reliable stacking strength and cost efficiency. Recyclable material supports sustainable logistics.
Boxes - Corrugated

26x18x10 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 261810

26 x 18 x 10 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$61.24 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 24x20x18" dimensions deliver proven stacking strength and freight efficiency for warehouse and fulfillment operations. Heavy-duty single-wall construction rated for demanding shipping environments. Sold in bundles of 10 for volume savings.
Boxes - Corrugated

24x20x18 ECT-32 Kraft Corrugated Boxes 10-Pack

PN: 242018

24 x 20 x 18 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$44.89 / BUNDLE
IN STOCK Industrial-grade 24x20x16 corrugated boxes built from ECT-32 kraft material for dependable strength and stackability. Sold in convenient bundles of 10, these shipping cartons deliver consistent performance for high-volume warehouse and fulfillment operations. Recyclable cardboard construction cuts waste and costs.
Boxes - Corrugated

24x20x16 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 242016

24 x 20 x 16 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$43.22 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes built for industrial warehouses and fulfillment operations. These 24" x 20" x 14" shipping cartons deliver reliable stacking strength and freight efficiency for mid-weight products. Sold in bundles of 10–scale up with volume discounts.
Boxes - Corrugated

24x20x14 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 242014

24 x 20 x 14 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$40.80 / BUNDLE
IN STOCK ECT-32 single wall corrugated boxes in 24" × 20" × 12" dimensions deliver reliable strength for mid-weight shipments and warehouse storage. Each bundle includes 10 kraft cartons–ideal for high-volume operations seeking cost-effective packaging without compromising durability. Recyclable kraft construction maximizes sustainability while maintaining crush resistance.
Boxes - Corrugated

24x20x12 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 242012

24 x 20 x 12 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$39.14 / BUNDLE
IN STOCK Industrial-grade 24x20x10 corrugated shipping boxes built from ECT-32 single-wall kraft material for dependable protection and efficient stacking. Each bundle includes 10 boxes, reducing your per-unit cost while maintaining the structural integrity your warehouse demands. 100% recyclable kraft construction meets sustainability goals without sacrificing performance.
Boxes - Corrugated

24x20x10 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 242010

24 x 20 x 10 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$36.82 / BUNDLE
IN STOCK ECT-32 kraft corrugated cartons engineered for shallow products and maximum freight efficiency. These 24x20x8 shipping boxes ship flat in bundles of 20, reducing your warehouse footprint and freight costs while maintaining reliable stacking performance.
Boxes - Corrugated

24x20x8 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 24208

24 x 20 x 8 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$91.61 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 24x20x6" dimensions ship flat to maximize warehouse efficiency and minimize freight spend. Perfect for apparel, books, frames, and artwork–these shallow-depth cartons provide an ideal fit for lightweight to medium-weight products. Sold in bundles of 10.
Boxes - Corrugated

24x20x6 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 24206

24 x 20 x 6 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$31.38 / BUNDLE
IN STOCK Heavy-duty ECT-32 kraft corrugated boxes built for high-volume fulfillment operations. Each 22x22x20" box delivers proven stacking performance and freight optimization. Buy in bundles of 10 and reduce per-unit costs while maintaining structural integrity on the dock.
Boxes - Corrugated

22x22x20 ECT-32 Kraft Corrugated Heavy Duty Shipping Boxes 10-Pack

PN: 222220

22 x 22 x 20 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$53.30 / BUNDLE

Product Help Request

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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

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Confirm

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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 ->