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 16x12x8 Kraft Heavy-Duty Corrugated Shipping Boxes, 550 Pack Pallet, 44 ECT
Boxes - Corrugated

16x12x8 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 25-Pack

PN: HD16128

16 x 12 x 8 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$52.44 / BUNDLE
IN STOCK Heavy-duty ECT-32 kraft corrugated boxes sized 16" × 12" × 8" for mid-weight products and efficient pallet stacking. Sold in bundles of 25 recyclable cardboard shipping cartons. Proven strength and cost-effective protection for fulfillment operations.
Boxes - Corrugated

16x12x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 16128

16 x 12 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$36.12 / BUNDLE
IN STOCK Reduce inventory complexity and shipping costs with these pre-scored 16x12x6 multi-depth corrugated boxes. Five scored fold lines let you adjust box height from 2" to 6" without a carton sizer. Strong ECT-32 kraft construction holds up through the supply chain–sold in bundles of 25.
Boxes - Corrugated

16x12x6 ECT-32 Kraft Multi-Depth Corrugated Shipping Box 25-Pack

PN: MD16126

16 x 12 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$38.23 / BUNDLE
IN STOCK 16x12x6 Kraft Corrugated Shipping Boxes, 825 Pack Pallet, 32 ECT
Boxes - Corrugated

16x12x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 16126

16 x 12 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$34.29 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 16" × 12" × 4" deliver optimal protection for shallow products while maximizing pallet density and reducing dimensional weight charges. Sold as a flat-shipped bundle of 25 cartons, these single-wall shipping boxes minimize storage footprint and freight expense without sacrificing stacking strength.
Boxes - Corrugated

16x12x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 16124

16 x 12 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$30.61 / BUNDLE
IN STOCK Reliable ECT-32 corrugated shipping boxes in 15x13x12" dimensions–the trusted standard for warehouse and fulfillment operations. Ships flat to maximize storage efficiency and reduce freight costs. Bundle of 25 boxes delivers immediate volume savings for high-volume shippers.
Boxes - Corrugated

15x13x12 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 151312

15 x 13 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$76.78 / BUNDLE
IN STOCK Industrial-grade 15x13x7 corrugated boxes engineered for warehouse and fulfillment operations. ECT-32 single-wall kraft construction delivers proven stacking strength and freight efficiency. Sold as convenient 25-box bundles to maximize your volume savings.
Boxes - Corrugated

15x13x7 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 15137

15 x 13 x 7 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$39.16 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes in 14" x 14" x 12" dimensions deliver standard industrial strength for mid-weight shipping and storage applications. Bundle of 25 units reduces per-unit costs and freight overhead. Fully recyclable kraft construction supports sustainability initiatives.
Boxes - Corrugated

14x14x12 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 141412

14 x 14 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$51.08 / BUNDLE
IN STOCK Premium ECT-48 double wall corrugated boxes designed for demanding shipping and storage applications. These 14x14x10 kraft cartons deliver superior stacking strength and puncture resistance to protect high-value freight. Sold in bundles of 15 and ship flat to minimize warehouse footprint and reduce freight costs.
Boxes - Corrugated

14x14x10 ECT-48 Double Wall Corrugated Shipping Boxes 15-Pack

PN: HD141410DW

14 x 14 x 10 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$45.15 / BUNDLE
IN STOCK 14x14x10 Kraft Heavy-Duty Corrugated Shipping Boxes, 275 Pack Pallet, 44 ECT
Boxes - Corrugated

14x14x10 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 25-Pack

PN: HD141410

14 x 14 x 10 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$110.28 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 14" x 14" x 10" deliver reliable stacking strength and proven performance for warehouse and fulfillment operations. Each bundle includes 25 boxes–ideal for volume shipping, inventory consolidation, and cost-efficient logistics. Fully recyclable kraft construction meets sustainability requirements while maintaining structural integrity.
Boxes - Corrugated

14x14x10 ECT-32 Kraft Corrugated Shipping Boxes

PN: 141410

14 x 14 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$43.49 / BUNDLE
IN STOCK Standard-strength ECT-32 kraft corrugated cartons sized 14" x 14" x 9" for reliable mid-weight shipping and storage. Sold in bundles of 25 boxes, these brown corrugated containers offer proven stacking performance and cost-effective volume packaging. Fully recyclable kraft construction built for warehouse efficiency.
Boxes - Corrugated

14x14x9 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 14149

14 x 14 x 9 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$48.95 / BUNDLE
IN STOCK Professional-grade 14x14x7 corrugated boxes with ECT-32 kraft construction deliver reliable strength for mid-size shipments and warehouse storage. Each bundle includes 25 boxes, reducing per-unit costs and inventory management overhead. Fully recyclable and built for high-volume fulfillment operations.
Boxes - Corrugated

14x14x7 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 14147

14 x 14 x 7 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$41.07 / BUNDLE
IN STOCK Replace multiple SKUs with one versatile solution. These 14x14x6 multi-depth corrugated boxes fold to 5 different heights with pre-scored sides–eliminating the need for a carton sizer and cutting inventory costs. Built tough with ECT-32 kraft corrugated material.
Boxes - Corrugated

14x14x6 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 25-Pack

PN: MD14146

14 x 14 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$39.77 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 14" x 14" x 6" for shallow product shipping. Ideal for apparel, books, frames, and artwork. Ships flat in bundles of 25 to maximize storage efficiency and reduce your freight spend.
Boxes - Corrugated

14x14x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 14146

14 x 14 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$36.12 / BUNDLE
IN STOCK Economical 14" x 14" x 5" ECT-32 kraft corrugated boxes designed for shallow-depth products. Bundle of 25 ships flat to maximize storage efficiency and reduce freight costs. Ideal for apparel, books, artwork, and mirrors.
Boxes - Corrugated

14x14x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 14145

14 x 14 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$38.08 / 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

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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 ->