Boxes & Mailers

SELECTION EXPERT ADVICE

Wall Strength & Load Capacity
MORE INFO
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
MORE INFO
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
MORE INFO
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 Ship long, narrow items efficiently with these 16x6x4 kraft corrugated boxes featuring ECT-32 single-wall construction. Wide lengthwise openings accelerate pack times and reduce labor costs. Sold flat in bundles of 25 for maximum freight efficiency.
Boxes - Corrugated

16x6x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1664

16 x 6 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$20.67 / BUNDLE
IN STOCK Cost-effective 14x8x8 corrugated boxes engineered for reliable mid-weight shipping and storage. ECT-32 single wall construction delivers proven stacking strength and freight efficiency. Sold in bundles of 25–ideal for high-volume fulfillment operations.
Boxes - Corrugated

14x8x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1488

14 x 8 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$25.70 / BUNDLE
IN STOCK Adjustable 14x8x6 multi-depth corrugated cartons fold to multiple heights without a carton sizer–maximize freight efficiency and cut packaging SKU inventory. Pre-scored kraft corrugated construction delivers ECT-32 strength for safe parcel shipping. Sold in bundles of 25.
Boxes - Corrugated

14x8x6 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 25-Pack

PN: MD1486

14 x 8 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$25.30 / BUNDLE
IN STOCK Standard ECT-32 kraft corrugated boxes sized 14" 8" 6" for efficient mid-weight shipping and storage. Each bundle includes 25 boxes, designed to stack reliably and reduce freight costs through optimized dimensioning. Recyclable material supports sustainable warehouse operations.
Boxes - Corrugated

14x8x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1486

14 x 8 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$21.86 / BUNDLE
IN STOCK 14x8x4 Kraft Corrugated Shipping Boxes, 950 Pack Pallet, 32 ECT
Boxes - Corrugated

14x8x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1484

14 x 8 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$29.11 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes engineered for reliable mid-weight shipping and storage. These 13" x 9" x 11" cartons deliver standard industrial strength in every bundle of 25, with proven stacking performance and recyclable construction to reduce your packaging waste footprint.
Boxes - Corrugated

13x9x11 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 13911

13 x 9 x 11 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$31.13 / BUNDLE
IN STOCK Industrial-grade 13x9x9 corrugated shipping boxes made from ECT-32 kraft single wall material. Proven performance for medium-weight products and e-commerce fulfillment. Buy in bundles of 25 and reduce packaging costs per unit.
Boxes - Corrugated

13x9x9 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1399

13 x 9 x 9 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$28.96 / BUNDLE
IN STOCK ECT-32 single wall corrugated boxes measuring 13" x 9" x 8" deliver reliable shipping performance at an economical price point. This bundle of 25 kraft cartons ships and stores flat, maximizing your warehouse efficiency. Industry-standard construction for small-to-medium package handling.
Boxes - Corrugated

13x9x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1398

13 x 9 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$44.12 / BUNDLE
IN STOCK Reliable ECT-32 single-wall corrugated boxes in 13x9x7 dimensions perfect for mid-weight products and standard fulfillment operations. Kraft construction delivers proven stacking strength and freight stability. Pack of 25 boxes reduces per-unit costs for high-volume warehouses.
Boxes - Corrugated

13x9x7 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1397

13 x 9 x 7 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$26.81 / BUNDLE
IN STOCK Optimize your shipping with 13x9x4" ECT-32 kraft corrugated boxes–engineered for shallow products like apparel, books, and frames. Sold flat in bundles of 25 to maximize warehouse space and reduce freight costs. Strong single-wall construction handles mid-weight items with reliable stacking performance.
Boxes - Corrugated

13x9x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1394R

13 x 9 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$36.78 / BUNDLE
IN STOCK Professional-grade 12x10x10" white corrugated boxes with ECT-32 single-wall construction deliver reliable protection and a clean branded appearance. Applied labels and shipping instructions stand out clearly against the crisp white background. Sold as a bundle of 25 boxes for maximum value.
Boxes - Corrugated

12x10x10 ECT-32 White Corrugated Shipping Boxes 25-Pack

PN: 121010W

12 x 10 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$38.92 / BUNDLE
IN STOCK ECT-32 single wall corrugated boxes in 12x10x10 dimensions engineered for mid-weight shipments and warehouse stacking. Each bundle includes 25 kraft cartons built to handle standard freight loads while maximizing pallet density. Recyclable kraft material reduces environmental impact.
Boxes - Corrugated

12x10x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 121010

12 x 10 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$27.70 / BUNDLE
IN STOCK Heavy-duty ECT-44 single-wall kraft corrugated boxes measuring 12" x 10" x 8" deliver 40% greater stacking strength than standard shipping cartons. Each bundle includes 25 flat-packed boxes, reducing storage footprint and freight costs. Built for warehouse managers who demand reliable protection without premium double-wall pricing.
Boxes - Corrugated

12x10x8 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 25-Pack

PN: HD12108

12 x 10 x 8 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$42.96 / BUNDLE
IN STOCK Fold these ECT-32 kraft corrugated boxes to three different heights–no carton sizer needed. Pre-scored sides let you adjust from 8" to 10" depth for perfect fits. Consolidate your inventory and cut parcel shipping expenses with one versatile box that replaces multiple SKUs.
Boxes - Corrugated

12x10x8 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 25-Pack

PN: MD12108

12 x 10 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$29.85 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 12" x 10" x 8" deliver proven standard strength for mid-weight shipments and warehouse storage. Sold as a 25-box bundle for maximum freight efficiency. Recyclable kraft material supports sustainable fulfillment operations.
Boxes - Corrugated

12x10x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 12108

12 x 10 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$27.29 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 12" 10" 7" deliver proven standard strength for mid-weight product shipping and fulfillment operations. Sold in bundles of 25, these recyclable cardboard boxes maximize your pallet density while maintaining structural integrity through the supply chain.
Boxes - Corrugated

12x10x7 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 12107

12 x 10 x 7 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$27.56 / 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 ->