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 boxes engineered for shallow-profile shipping. At 17" × 13" × 5", these cartons maximize density and reduce freight costs for apparel, books, frames, and artwork. Sold as a bundle of 25 and ship flat for efficient warehouse storage.
Boxes - Corrugated

17x13x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 17135

17 x 13 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$37.95 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 16x14x14 dimensions deliver reliable protection for mid-weight products at competitive per-unit costs. This 25-box bundle offers immediate inventory availability and consistent stacking performance for warehouse operations. Recyclable kraft material meets sustainability standards while maintaining proven durability.
Boxes - Corrugated

16x14x14 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 161414

16 x 14 x 14 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$58.09 / BUNDLE
IN STOCK Upgrade to ECT-44 heavy-duty corrugated boxes that deliver 40% greater stacking strength than standard shipping containers. These 16" x 14" x 10" kraft cartons are engineered for warehouse managers and fulfillment directors who need reliable protection without excess cost. Sold flat in bundles of 25 for maximum efficiency.
Boxes - Corrugated

16x14x10 ECT-44 Heavy-Duty Corrugated Shipping Boxes 25-Pack

PN: HD161410

16 x 14 x 10 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$123.43 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes built for dependable mid-size shipments and storage. These 16" x 14" x 10" shipping cartons deliver proven stacking strength and cost-effective protection per case. Bundle of 25 boxes–ready to stock your warehouse.
Boxes - Corrugated

16x14x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 161410

16 x 14 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$50.33 / BUNDLE
IN STOCK Reliable ECT-32 single-wall corrugated boxes sized 16" × 14" × 8" in kraft brown. Perfect for mid-weight product shipping and warehouse storage. Sold as a 25-pack bundle for volume efficiency and cost savings.
Boxes - Corrugated

16x14x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 16148

16 x 14 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$45.92 / BUNDLE
IN STOCK Optimize your fulfillment with 16x14x6 ECT-32 kraft corrugated boxes designed for shallow products and cost-effective shipping. These flat kraft cardboard boxes ship bundled (25-pack) to minimize warehouse footprint and freight expense. Ideal for apparel, books, picture frames, and artwork.
Boxes - Corrugated

16x14x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 16146

16 x 14 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$42.30 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 16" × 14" × 4" engineered for shallow-profile products like apparel, books, and artwork. Sold as bundle of 25 and ship flat to maximize storage and freight efficiency in your warehouse.
Boxes - Corrugated

16x14x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 16144

16 x 14 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$37.81 / BUNDLE
IN STOCK ECT-32 single-wall kraft corrugated boxes sized 15" x 15" x 12" for reliable mid-weight shipping. Sold as a bundle of 25 units to maximize your volume savings and freight efficiency. Built for warehouse operations that demand consistent quality and sustainable packaging.
Boxes - Corrugated

15x15x12 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 151512

15 x 15 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$56.64 / BUNDLE
IN STOCK Industrial-grade 15x15x8 corrugated shipping boxes manufactured from ECT-32 kraft material for reliable protection and cost efficiency. This bundle of 25 kraft boxes delivers consistent performance for mid-weight product shipments. Recyclable cardboard construction reduces your environmental footprint while maintaining structural integrity.
Boxes - Corrugated

15x15x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 15158

15 x 15 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$47.95 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes sized 15" x 15" x 7" deliver proven stacking strength for mid-weight products in high-volume fulfillment operations. Each 25-pack bundle provides cost-effective shipping cartons that maximize pallet efficiency while maintaining structural integrity. Recyclable kraft material supports your sustainability goals.
Boxes - Corrugated

15x15x7 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 15157

15 x 15 x 7 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$45.92 / BUNDLE
IN STOCK These 15x15x6 flat corrugated boxes deliver reliable ECT-32 kraft construction for shallow-profile products. Bundle of 25 ships flat–reducing storage footprint and freight costs while maintaining full stacking strength. Ideal for apparel, books, artwork, and picture frames.
Boxes - Corrugated

15x15x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 15156

15 x 15 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$44.35 / BUNDLE
IN STOCK 15x15x5 Kraft Corrugated Shipping Boxes, 650 Pack Pallet, 32 ECT
Boxes - Corrugated

15x15x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 15155

15 x 15 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$42.52 / BUNDLE
IN STOCK 15x15x4 Kraft Corrugated Shipping Boxes, 725 Pack Pallet, 32 ECT
Boxes - Corrugated

15x15x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 15154

15 x 15 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$38.24 / BUNDLE
IN STOCK 15x15x3 Kraft Corrugated Boxes, 550 Pack Pallet, 32 ECT
Boxes - Corrugated

15x15x3 ECT-32 Kraft Corrugated Boxes 25-Pack

PN: 15153

15 x 15 x 3 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$50.68 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes designed for long, narrow items–wine bottles, umbrellas, carpet rolls, and similar products. The 24x6x4" long-side opening provides fast, efficient packing and reduces labor time. Sold flat in bundles of 25 for maximum space savings and freight efficiency.
Boxes - Corrugated

24x6x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 2464

24 x 6 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$35.38 / BUNDLE
IN STOCK Ship long, narrow items efficiently with our 20x10x10 corrugated boxes made from durable ECT-32 kraft material. Wide lengthwise opening design cuts packing time and labor costs. Sold in bundles of 25–maximize your freight efficiency and volume savings.
Boxes - Corrugated

20x10x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 201010

20 x 10 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$42.30 / 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

Save the SKU or product link for repeat purchasing and support questions.

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 ->