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 Protect high-value shipments with ECT-71 heavy-duty double wall construction rated for 140# stacking capacity. These 16x16x16 kraft corrugated boxes deliver superior crush resistance and freight efficiency in a convenient bundle of 15 cartons.
Boxes - Corrugated

16x16x16 ECT-71 Heavy-Duty Double Wall Corrugated Shipping Boxes 15-Pack

PN: HD161616HDDW

16 x 16 x 16 in ECT-71 Double Wall Corrugated 15 PER BUNDLE
$228.20 / BUNDLE
IN STOCK ECT-48 heavy-duty double wall corrugated boxes deliver superior protection and stacking strength for high-volume industrial shipping. These 16x16x16" kraft cartons resist crushing and impact, ensuring shipments arrive intact. Bundle of 15 ships flat–maximize your storage efficiency and reduce freight costs.
Boxes - Corrugated

16x16x16 ECT-48 Heavy Duty Double Wall Corrugated Shipping Boxes 15-Pack

PN: HD161616DW

16 x 16 x 16 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$67.96 / BUNDLE
IN STOCK 24x9x9 Kraft Corrugated Shipping Boxes, 625 Pack Pallet, 32 ECT
Boxes - Corrugated

24x9x9 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 2499

24 x 9 x 9 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$45.98 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes sized 22" x 17" x 12" for reliable mid-weight product shipping and storage. Sold in bundles of 10 for maximum volume savings. Stackable design optimizes warehouse space and reduces freight costs per unit.
Boxes - Corrugated

22x17x12 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 221712

22 x 17 x 12 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$27.21 / BUNDLE
IN STOCK Industrial-grade 21x12x12 corrugated shipping boxes with ECT-32 kraft construction deliver reliable protection and maximum stack strength for high-volume fulfillment operations. Bundle of 20 boxes reduces per-unit costs and minimizes inventory turnover. Fully recyclable kraft material supports sustainable warehouse operations.
Boxes - Corrugated

21x12x12 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 211212

21 x 12 x 12 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$44.13 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated shipping cartons with long side opening designed for narrow and elongated items like wine bottles, umbrellas, and carpet rolls. Dimensions 20" × 13" × 10" provide optimal length for efficient packing. Sold in bundles of 25 flat-packed boxes to maximize freight efficiency and reduce storage footprint.
Boxes - Corrugated

20x13x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 201310

20 x 13 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$54.92 / BUNDLE
IN STOCK 18x15x15 Kraft Multi-Depth Corrugated Shipping Boxes, 410 Pack Pallet, 32 ECT
Boxes - Corrugated

18x15x15 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 10-Pack

PN: MD181515

18 x 15 x 15 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$27.27 / BUNDLE
IN STOCK ECT-32 single wall corrugated boxes sized 14" × 14" × 19" deliver proven durability for mid-weight shipping and storage. Sold in efficient bundles of 20 kraft cartons. Recyclable material reduces waste and supports sustainable fulfillment operations.
Boxes - Corrugated

14x14x19 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 141419

14 x 14 x 19 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$61.82 / BUNDLE
IN STOCK Master corrugated boxes designed to nest and consolidate 6 standard 8" cube cartons into one efficient shipment. ECT-32 single-wall kraft construction with precise 25 1/8x8 3/8x17 1/2" dimensions eliminates void fill waste and reduces freight spend. Sold flat in bundles of 15 for maximum warehouse efficiency.
Boxes - Corrugated

25 1/8x8 3/8x17 1/2 ECT-32 Master Corrugated Boxes 15-Pack

PN: 25817

25 1/8 x 8 3/8 x 17 1/2 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$36.53 / BUNDLE
IN STOCK Industrial-grade 20x14x12 corrugated boxes made from ECT-32 kraft material for reliable shipping and storage. Each bundle includes 20 boxes engineered for standard warehouse and fulfillment operations. Recyclable kraft construction reduces shipping weight while maintaining structural integrity.
Boxes - Corrugated

20x14x12 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 201412

20 x 14 x 12 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$45.45 / BUNDLE
IN STOCK 26x8x8 Kraft Corrugated Long Shipping Boxes, 725 Pack Pallet, 32 ECT
Boxes - Corrugated

26x8x8 ECT-32 Kraft Corrugated Long Shipping Boxes 25-Pack

PN: 2688

26 x 8 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$38.49 / BUNDLE
IN STOCK Industry-standard 24x10x12 corrugated shipping boxes built with ECT-32 single-wall kraft construction for maximum durability and stacking performance. Ships and stores flat, reducing warehouse footprint and freight costs. Bundle of 25 ready for immediate deployment in fulfillment operations.
Boxes - Corrugated

24x10x12 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 241012

24 x 10 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$83.81 / BUNDLE
IN STOCK Ship long and narrow items efficiently with our 24x10x10 ECT-32 kraft corrugated boxes. Wide openings along the length reduce packing time and labor costs. Sold in convenient bundles of 25, flat-shipped to maximize freight efficiency.
Boxes - Corrugated

24x10x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 241010

24 x 10 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$47.26 / BUNDLE
IN STOCK Ship long, narrow items efficiently with 24x10x8 corrugated boxes featuring ECT-32 kraft construction and convenient wide side openings. Perfect for wine bottles, umbrellas, carpet rolls, and specialty products. Sold flat in bundles of 25 for maximum freight savings and warehouse efficiency.
Boxes - Corrugated

24x10x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 24108

24 x 10 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$42.67 / BUNDLE
IN STOCK ECT-32 kraft corrugated shipping boxes engineered for shallow-depth products that demand reliable protection without excess material waste. These 24x10x6" cartons ship flat to maximize your warehouse storage and reduce freight costs–perfect for apparel, books, artwork, and picture frames. Bundle of 25 per order.
Boxes - Corrugated

24x10x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 24106

24 x 10 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$38.09 / BUNDLE
IN STOCK ECT-32 kraft corrugated cartons with shallow 4" depth designed for compact product shipping. Perfect for apparel, books, artwork, and picture frames. Ships flat in bundles of 25 to maximize storage efficiency and reduce freight costs.
Boxes - Corrugated

24x10x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 24104

24 x 10 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$34.24 / 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 ->