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 Industrial-grade 26x20x18" corrugated boxes built from ECT-32 kraft material for reliable mid-size product shipping and storage. Bundle of 10 units delivers consistent performance and cost efficiency for warehouse and fulfillment operations. Fully recyclable kraft construction meets sustainability standards.
Boxes - Corrugated

26x20x18 ECT-32 Kraft Corrugated Boxes 10-Pack

PN: 262018

26 x 20 x 18 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$49.05 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 26" × 20" × 16" dimensions–purpose-built for garment distribution and storage. Ship clothing with or without hangers in this reliable single-wall cardboard box. Order in bundles of 10 for better per-unit pricing and fast delivery.
Boxes - Corrugated

26x20x16 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 262016

26 x 20 x 16 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$45.13 / BUNDLE
IN STOCK Ship and store clothing efficiently with our 26x20x12 ECT-32 kraft corrugated boxes. Each bundle includes 15 boxes engineered for garment protection, with or without hangers. Single-wall construction delivers cost-effective strength and optimal freight utilization for warehouse operations.
Boxes - Corrugated

26x20x12 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 262012

26 x 20 x 12 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$82.22 / BUNDLE
IN STOCK Ship apparel efficiently with these 26x20x10 corrugated cartons manufactured from ECT-32 single wall kraft material. Bundle of 15 boxes provides immediate inventory at volume savings. Engineered for reliable stacking performance and hanger compatibility in garment fulfillment operations.
Boxes - Corrugated

26x20x10 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 262010

26 x 20 x 10 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$77.04 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes engineered for garment shipping and storage. 26" × 20" × 8" dimensions maximize freight efficiency while maintaining reliable stacking performance. Sold as a convenient bundle of 15 cartons–ready to ship with or without hangers.
Boxes - Corrugated

26x20x8 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 26208

26 x 20 x 8 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$90.13 / BUNDLE
IN STOCK Ship lightweight products efficiently with these 26x20x6 ECT-32 kraft corrugated boxes. The shallow 6" depth reduces dimensional weight charges and storage footprint. Bundle of 20 flat boxes ready to assemble–perfect for apparel, books, frames, and artwork.
Boxes - Corrugated

26x20x6 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 26206

26 x 20 x 6 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$88.99 / BUNDLE
IN STOCK 26x20x4 Kraft Corrugated Shipping Boxes, 320 Pack Pallet, 32 ECT
Boxes - Corrugated

26x20x4 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 26204

26 x 20 x 4 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$70.12 / BUNDLE
IN STOCK ECT-44 kraft corrugated side loading boxes designed for high-volume fulfillment operations. 36"L x 8"W x 30"H dimensions optimize freight efficiency and pallet stacking. Ships flat in bundles of 10 to maximize your warehouse storage capacity.
Boxes - Corrugated

36x8x30 ECT-44 Kraft Side Loading Boxes 10-Pack

PN: HD36830FOL

36 x 8 x 30 in ECT-44 Single Wall Corrugated 10 PER BUNDLE
$124.47 / BUNDLE
IN STOCK Maximize warehouse efficiency with these 36x5x36 side loading corrugated boxes featuring full overlap (FOL) flaps for enhanced product protection. Constructed from ECT-32 kraft single-wall material with 3.8 cubic foot capacity, this bundle of 20 ships flat to reduce storage footprint and freight costs–the smart choice for fulfillment directors managing high-volume operations.
Boxes - Corrugated

36x5x36 ECT-32 Side Loading Boxes Full Overlap 20-Pack

PN: 36536FOL

36 x 5 x 36 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$110.33 / BUNDLE
IN STOCK Heavy-duty ECT-32 single-wall corrugated boxes sized 29" × 17" × 20" for efficient garment and apparel shipping. Kraft construction provides reliable stacking strength and freight performance. Sold in bundles of 10 to maximize your volume savings.
Boxes - Corrugated

29x17x20 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 291720

29 x 17 x 20 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$52.93 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 29" × 17" × 15" for efficient garment storage and shipping. Accommodates clothing with or without hangers. Sold as a 15-box bundle for maximum volume savings and freight efficiency.
Boxes - Corrugated

29x17x15 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 291715

29 x 17 x 15 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$64.52 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes designed for apparel distribution. 29" x 17" x 7" dimensions accommodate folded or hanging garments. Sold in bundles of 20 for volume efficiency and freight cost savings.
Boxes - Corrugated

29x17x7 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 29177

29 x 17 x 7 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$103.11 / BUNDLE
IN STOCK ECT-48 double wall kraft corrugated boxes engineered for maximum protection and stacking performance. 28" x 18" x 18" dimensions accommodate mid-size shipments with room to spare. Ship flat in bundles of 10 to reduce warehouse footprint and freight costs.
Boxes - Corrugated

28x18x18 ECT-48 Kraft Double Wall Corrugated Boxes 10-Pack

PN: HD281818DW

28 x 18 x 18 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$115.64 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 28" × 18" × 12" dimensions, sold as a bundle of 15 units. Built for warehouse, fulfillment, and shipping operations with reliable stacking performance and superior freight efficiency. Recyclable material reduces environmental footprint while maintaining strength standards.
Boxes - Corrugated

28x18x12 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 281812

28 x 18 x 12 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$56.89 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes in 28" × 18" × 10" dimensions deliver industry-standard stacking strength and crush resistance. Ships flat to maximize warehouse space and freight efficiency. Bundle of 15 boxes reduces per-unit cost and minimizes reorder hassles for busy fulfillment centers.
Boxes - Corrugated

28x18x10 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 281810

28 x 18 x 10 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$73.03 / BUNDLE
IN STOCK Ship smarter with 28x18x6 corrugated boxes designed for shallow products that maximize pallet density and reduce freight costs. ECT-32 single-wall kraft construction delivers reliable protection while shipping flat saves 40% storage space. Bundle of 20 ready to deploy.
Boxes - Corrugated

28x18x6 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 28186

28 x 18 x 6 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$110.45 / 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

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 ->