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 shipping boxes sized 15" x 10" x 5" for optimal shallow product packaging. Bundle of 25 boxes ships flat to maximize storage efficiency and reduce freight spend. Perfect for apparel, books, frames, and lightweight merchandise.
Boxes - Corrugated

15x10x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 15105

15 x 10 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$27.90 / BUNDLE
IN STOCK Durable ECT-32 kraft corrugated boxes in a convenient 14x11x6 size, sold as a bundle of 25 units. Built for reliable stacking performance and freight efficiency in high-volume warehouse operations. Recyclable kraft material reduces environmental impact while meeting standard industrial shipping requirements.
Boxes - Corrugated

14x11x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 14116

14 x 11 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$30.61 / BUNDLE
IN STOCK Optimize your fulfillment with these ECT-32 kraft corrugated boxes designed for shallow-profile products. The 14x11x4.5" dimension minimizes dimensional weight charges while maintaining structural integrity. Ships flat in bundles of 25 to maximize warehouse efficiency and reduce storage footprint.
Boxes - Corrugated

14x11x4.5 ECT-32 Kraft Corrugated Boxes 25-Pack

PN: 14114

14 x 11 x 4 1/2 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$28.21 / BUNDLE
IN STOCK Industrial-grade ECT-32 kraft corrugated shipping boxes in 12.5x12.5x12 dimensions deliver proven stacking performance and freight efficiency for warehouse operations. Standard strength single-wall construction handles mid-weight products with reliable crush resistance. Sold in bundles of 25 – recyclable cardboard cartons built for B2B fulfillment demands.
Boxes - Corrugated

12.5x12.5x12 ECT-32 Kraft Corrugated Heavy Duty Shipping Boxes 25-Pack

PN: 121212R

12 1/2 x 12 1/2 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$42.63 / BUNDLE
IN STOCK 10x10x15 ECT-32 Kraft Corrugated Boxes - Bundle of 25
Boxes - Corrugated

10x10x15 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 101015

10 x 10 x 15 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$37.71 / BUNDLE
IN STOCK End-load design for fast, efficient packing of tall items like fishing rods, shelving, and trophies. ECT-32 kraft single-wall corrugated delivers reliable strength at economical cost. Sold flat in bundles of 25 for maximum warehouse efficiency.
Boxes - Corrugated

8x8x17 ECT-32 Kraft Corrugated Boxes 25-Pack

PN: 8817

8 x 8 x 17 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$29.70 / BUNDLE
IN STOCK 17x8.5x9.3 ECT-44 Hazmat Paint Can Box - 2 Gallon Capacity, Bundle of 25
Boxes - Corrugated

17x8 1/2x9 3/10 ECT-44 Hazmat Shipping Boxes 25-Pack

PN: HAZ1045

17 x 8.5 x 9.3 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$194.19 / BUNDLE
IN STOCK Reliable 13x10x15" corrugated cartons built with ECT-32 single-wall kraft material for proven shipping and storage performance. Ship flat to maximize warehouse efficiency and reduce freight costs. Bundle of 25 boxes per order–the trusted standard for fulfillment operations.
Boxes - Corrugated

13x10x15 ECT-32 Kraft Corrugated Boxes 25-Pack

PN: 131015

13 x 10 x 15 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$65.72 / BUNDLE
IN STOCK 12.25x12.25x12.75 Haz Mat Corrugated Box, 120 Pack Pallet, 44 ECT
Boxes - Corrugated

12.25x12.25x12.75 ECT-44 Haz Mat Corrugated Box 20-Pack

PN: HAZ1052

12 1/4 x 12 1/4 x 12 3/4 in ECT-44 Single Wall Corrugated 20 PER BUNDLE
$198.70 / BUNDLE
IN STOCK Dependable 12x12x13" corrugated boxes manufactured from ECT-32 kraft material–designed for warehouse managers and fulfillment directors who need reliable stacking strength and freight efficiency. This 25-box bundle delivers standard-strength performance for mid-weight products while maximizing pallet density and reducing per-unit shipping costs.
Boxes - Corrugated

12x12x13 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 121213R

12 x 12 x 13 in ECT-32 Corrugated 25 PER BUNDLE
$43.76 / BUNDLE
IN STOCK Ship long, narrow items efficiently with 18x8x8" corrugated boxes featuring a convenient long-side opening for fast packing. ECT-32 kraft construction delivers reliable stacking performance and crush resistance. Sold in bundles of 25 flat boxes–maximize your storage and freight efficiency.
Boxes - Corrugated

18x8x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1888

18 x 8 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$30.60 / BUNDLE
IN STOCK 15x11x4 Kraft Corrugated Shipping Boxes, 700 Pack Pallet, 32 ECT
Boxes - Corrugated

15x11x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 15114

15 x 11 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$40.22 / BUNDLE
IN STOCK 14x12x4 Kraft Corrugated Shipping Boxes, 925 Pack Pallet, 32 ECT
Boxes - Corrugated

14x12x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 14124

14 x 12 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$30.02 / BUNDLE
IN STOCK 20x6x6 Kraft Corrugated Long Shipping Boxes, 1,200 Pack Pallet, 32 ECT
Boxes - Corrugated

20x6x6 ECT-32 Kraft Corrugated Long Shipping Boxes 25-Pack

PN: 2066

20 x 6 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$23.37 / BUNDLE
IN STOCK Ship long, narrow items efficiently with these 18x8x6 ECT-32 kraft corrugated boxes. Designed with wide lengthwise openings for fast packing of wine bottles, umbrellas, carpet rolls, and similar products. Sold flat in bundles of 25 for maximum warehouse space efficiency.
Boxes - Corrugated

18x8x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1886

18 x 8 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$26.85 / BUNDLE
IN STOCK Ship long and narrow items efficiently with these 18x8x4" ECT-32 kraft corrugated boxes. Wide lengthwise openings enable fast, ergonomic packing of wine bottles, umbrellas, carpet rolls, and similar products. Sold flat in bundles of 25 for maximum space savings and freight efficiency.
Boxes - Corrugated

18x8x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1884

18 x 8 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$27.48 / 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 ->