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 kraft corrugated cube boxes sized 19" × 19" × 19" for secure shipping of round, cylindrical, and irregular products. Sold in bundles of 10 flat boxes, maximizing warehouse storage and freight efficiency. Strong single-wall construction ensures reliable protection without excess cost.
Boxes - Corrugated

19x19x19 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 191919

19 x 19 x 19 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$40.72 / BUNDLE
IN STOCK Heavy-duty 16x16x22 corrugated shipping boxes built for demanding warehouse operations. ECT-32 single wall kraft construction delivers proven stacking strength and freight efficiency. Sold as convenient 20-box bundles to maximize your packaging volume savings.
Boxes - Corrugated

16x16x22 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 161622

16 x 16 x 22 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$113.65 / BUNDLE
IN STOCK Ship tall items efficiently with our 14 x 14 x 24" corrugated boxes–ECT-32 kraft construction rated for stacking and freight performance. End-loading design speeds packing. Bundle of 15 boxes ships flat to maximize your warehouse storage and freight efficiency.
Boxes - Corrugated

14x14x24 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 141424

14 x 14 x 24 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$43.04 / BUNDLE
IN STOCK Ship tall items efficiently with these 8x8x30 corrugated boxes made from ECT-32 kraft single-wall corrugated. End-loading design for fast packing. Sold as bundles of 25 boxes, shipped flat to maximize freight efficiency and storage space.
Boxes - Corrugated

8x8x30 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 8830

8 x 8 x 30 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$44.28 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes engineered for reliable performance in high-volume fulfillment operations. These 20x18x20 shipping cartons deliver consistent stacking strength and freight efficiency. Sold as a bundle of 10 recyclable cardboard boxes.
Boxes - Corrugated

20x18x20 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 201820

20 x 18 x 20 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$49.37 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 18x18x20" dimensions deliver proven stacking strength and crush resistance for high-volume warehouse operations. Single-wall construction reduces freight costs while maintaining structural integrity. Sold as a convenient bundle of 15 boxes–ideal for mid-range shipments and inventory management.
Boxes - Corrugated

18x18x20 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 181820

18 x 18 x 20 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$56.16 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes designed for tall, narrow items like trophies, fishing rods, and shelving. End-loading design for fast packing and sealing. Sold flat in bundles of 25–cuts freight costs and storage space versus mailing tubes.
Boxes - Corrugated

6x6x32 ECT-32 Kraft Single Wall Tall Corrugated Shipping Boxes 25-Pack

PN: 6632

6 x 6 x 32 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$78.63 / BUNDLE
IN STOCK ECT-32 single-wall kraft corrugated boxes built for high-volume fulfillment operations. These 26x13x8 shipping cartons deliver reliable stacking performance and freight efficiency in bundles of 20. Recyclable cardboard construction reduces waste while meeting industrial shipping standards.
Boxes - Corrugated

26x13x8 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 26138

26 x 13 x 8 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$48.12 / BUNDLE
IN STOCK Heavy-duty 24x15x12 kraft corrugated boxes built from ECT-32 single-wall material for reliable industrial shipping and storage. Each bundle includes 20 boxes, delivering volume savings and consistent strength across your fulfillment operation. Fully recyclable kraft construction reduces waste while maximizing stack performance.
Boxes - Corrugated

24x15x12 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 241512

24 x 15 x 12 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$61.09 / BUNDLE
IN STOCK Heavy-duty 24x15x10 corrugated boxes manufactured from ECT-32 kraft material for reliable legal file storage and economical shipping. Foldable flaps enable fast packing and space-efficient stacking. Sold as a 20-box bundle to maximize cost savings per unit.
Boxes - Corrugated

24x15x10 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 241510

24 x 15 x 10 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$54.97 / BUNDLE
IN STOCK Heavy-duty ECT-32 single-wall corrugated boxes sized 23" × 16" × 18 5/8" for reliable mid-sized shipments. Sold in bundles of 15 kraft cartons with excellent stacking performance and compression strength. Maximize freight efficiency while reducing per-unit packaging costs.
Boxes - Corrugated

23x16x18 5/8 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 231618

23 x 16 x 18 5/8 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$53.82 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 24" × 15" × 15" deliver standard industrial strength for mid-weight shipping and storage. Sold in bundles of 20 units to maximize freight efficiency and reduce per-unit costs. Fully recyclable and manufactured to consistent quality standards.
Boxes - Corrugated

24x15x15 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 241515

24 x 15 x 15 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$67.31 / BUNDLE
IN STOCK Heavy-duty 9x9x30" tall corrugated boxes built from ECT-32 kraft material for reliable shipping of elongated items. End-loading design enables fast, efficient insertion and sealing. Sold as a bundle of 25 boxes, shipped flat to maximize freight efficiency.
Boxes - Corrugated

9x9x30 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 9930

9 x 9 x 30 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$52.49 / BUNDLE
IN STOCK Ship tall products efficiently with these 15x15x24" ECT-32 kraft corrugated boxes. End-load design speeds packing and sealing while maintaining structural integrity. Sold as a bundle of 20 and ships flat to maximize your warehouse space and freight efficiency.
Boxes - Corrugated

15x15x24 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 151524

15 x 15 x 24 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$83.93 / BUNDLE
IN STOCK Ship long and narrow items efficiently with these 36x4x4 corrugated cartons. ECT-32 kraft single-wall construction provides reliable protection for wine bottles, umbrellas, carpet rolls, and similar products. Pre-bundled in quantities of 25 boxes, sold flat to maximize freight efficiency and minimize storage footprint.
Boxes - Corrugated

36x4x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 3644

36 x 4 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$51.19 / BUNDLE
IN STOCK Ship long, narrow items efficiently with these 30x10x10" ECT-32 kraft corrugated boxes featuring long-side openings for faster packing. Durable single-wall construction rated ECT-32 for secure stacking and freight protection. Sold in convenient bundles of 20 boxes, flat-packed to maximize warehouse storage and reduce shipping costs.
Boxes - Corrugated

30x10x10 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 301010

30 x 10 x 10 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$44.63 / 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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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 ->