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-48 heavy-duty double wall corrugated boxes designed for demanding warehouse and fulfillment operations. 26x20x20" kraft cartons offer superior stacking performance and freight efficiency in bundles of 10. Ships flat to maximize storage space and reduce inbound shipping costs.
Boxes - Corrugated

26x20x20 ECT-48 Kraft Heavy Duty Double Wall Corrugated Shipping Boxes 10-Pack

PN: HD262020DW

26 x 20 x 20 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$80.59 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes sized 26" x 20" x 14" for efficient garment and apparel shipping. Bundle of 15 boxes delivers reliable stacking performance and cost-effective storage solutions. Supports both hanger-ready and flat-pack clothing configurations.
Boxes - Corrugated

26x20x14 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 262014

26 x 20 x 14 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$103.34 / BUNDLE
IN STOCK Heavy-duty 20x20x26" corrugated shipping boxes built from ECT-32 kraft material for dependable protection and stackability. Sold as a convenient bundle of 10 cartons. Ideal for warehouses and fulfillment centers requiring consistent, cost-effective packaging.
Boxes - Corrugated

20x20x26 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 202026

20 x 20 x 26 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$47.91 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 18" × 18" × 28" deliver reliable, standard-strength performance for mid-weight product shipping. Bundle of 10 boxes provides cost-effective volume packaging for warehouses and fulfillment operations. Fully recyclable construction meets sustainability requirements.
Boxes - Corrugated

18x18x28 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 181828

18 x 18 x 28 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$49.57 / BUNDLE
IN STOCK Heavy-duty 16x16x30 corrugated boxes with ECT-32 kraft construction deliver reliable stacking performance for tall items, trophies, shelving, and long goods. End-loading design speeds insertion and sealing. Sold flat in bundles of 10 for maximum freight efficiency and volume savings.
Boxes - Corrugated

16x16x30 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 161630

16 x 16 x 30 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$41.09 / BUNDLE
IN STOCK Premium ECT-32 kraft corrugated outer lamp boxes sized 12 5/16" x 12 5/16" x 40" deliver adjustable protection for fragile items like lamps, mirrors, and artwork. Pre-printed with fragile warnings, directional arrows, and write-on destination panels. Sold flat in convenient bundles of 15 cartons.
Boxes - Corrugated

12 5/16x12 5/16x40 ECT-32 Kraft Outer Lamp Boxes 15-Pack

PN: OUTERLAMP

12 5/16 x 12 5/16 x 40 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$59.25 / BUNDLE
IN STOCK 10x10x36 ECT-32 Kraft Corrugated Tall Boxes - 25 Bundle
Boxes - Corrugated

10x10x36 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 101036

10 x 10 x 36 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$69.16 / BUNDLE
IN STOCK Premium ECT-32 single-wall kraft corrugated boxes sized 6" x 6" x 40" for shipping tall items like rods, shelving, and trophies. End-loading design enables fast, efficient packing and sealing. Sold flat in bundles of 25 to maximize freight efficiency and storage space.
Boxes - Corrugated

6x6x40 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 6640

6 x 6 x 40 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$69.83 / BUNDLE
IN STOCK Ship flat-panel TVs with confidence using our ECT-48 double-wall corrugated TV boxes. These 38x8x26" kraft cartons feature full-overlap flaps and fragile markings on two sides for maximum protection during transit. Bundle of 5 boxes delivers volume savings and reliable side-loading performance.
Boxes - Corrugated

38x8x26 ECT-48 Double Wall Flat Panel TV Box 5-Pack

PN: 38826FPFOL

38 x 8 x 26 in ECT-48 Double Wall Corrugated 5 PER BUNDLE
$105.29 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes sized 23" x 23" x 23" deliver proven stacking performance for mid-weight shipping and storage. Sold as a bundle of 10, these kraft cartons reduce per-unit costs while maintaining crush resistance. 100% recyclable corrugated construction.
Boxes - Corrugated

23x23x23 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 232323

23 x 23 x 23 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$92.53 / BUNDLE
IN STOCK Heavy-duty 22x22x24 corrugated shipping boxes with ECT-32 single-wall construction deliver reliable stacking performance and superior crush resistance. Ships flat to maximize your warehouse efficiency–ideal for fulfillment centers managing high-volume orders. Bundle of 10 kraft cartons ready to deploy.
Boxes - Corrugated

22x22x24 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 222224

22 x 22 x 24 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$64.49 / BUNDLE
IN STOCK Ship tall items efficiently with our 8x8x38 ECT-32 kraft corrugated boxes. End-loading design for fast packing; strong single-wall construction handles demanding fulfillment. Sold as a 25-box bundle, flat-packed to maximize freight efficiency and storage.
Boxes - Corrugated

8x8x38 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 8838

8 x 8 x 38 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$110.33 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes sized 30" x 17" x 16" – built for reliable stacking and freight efficiency in high-volume fulfillment operations. Sold as a bundle of 15 units. Fully recyclable and cost-effective for warehouse shipping, storage, and distribution needs.
Boxes - Corrugated

30x17x16 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 301716

30 x 17 x 16 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$63.26 / BUNDLE
IN STOCK Eliminate carton sizer headaches with pre-scored corrugated boxes that fold to multiple depths. These 30x17x16 ECT-32 kraft boxes cut inventory complexity and parcel shipping costs by letting you right-size every shipment. Bundle of 15 boxes.
Boxes - Corrugated

30x17x16 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 15-Pack

PN: MD301716

30 x 17 x 16 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$70.90 / BUNDLE
IN STOCK ECT-32 kraft corrugated shipping boxes in 31x16x9" dimensions deliver industry-standard stacking strength for mid-weight freight. Ship and store flat to reduce logistics costs and warehouse footprint. Sold as a bundle of 10 boxes for volume savings.
Boxes - Corrugated

31x16x9 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 31169

31 x 16 x 9 in ECT-32 Corrugated 10 PER BUNDLE
$52.07 / BUNDLE
IN STOCK Heavy-duty 24x24x16 double wall corrugated boxes with ECT-48 strength rating deliver superior stacking performance and load stability. Ships and stores flat to maximize warehouse efficiency. Bundle of 10 kraft cartons ready for immediate deployment.
Boxes - Corrugated

24x24x16 ECT-48 Kraft Heavy Duty Double Wall Corrugated Shipping Boxes 10-Pack

PN: HD242416DW

24 x 24 x 16 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$132.07 / 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

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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 ->