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 Optimize your shipping costs with these ECT-32 kraft master corrugated boxes designed to consolidate smaller cartons and eliminate unnecessary void fill. At 12 3/4 x 6 3/8 x 13 1/2", these single-wall boxes deliver reliable stacking performance while maximizing pallet density. Sold in bundles of 25 and shipped flat for space-efficient storage.
Boxes - Corrugated

12 3/4x6 3/8x13 1/2 ECT-32 Master Corrugated Box 25-Pack

PN: 12613

12 3/4 x 6 3/8 x 13 1/2 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$28.86 / BUNDLE
IN STOCK ECT-32 single-wall kraft corrugated boxes sized 12" x 8" x 12" deliver reliable protection and stacking strength for high-volume shipping. Ships flat to maximize warehouse storage efficiency. 25-box bundle reduces per-unit cost and freight expenses for fulfillment centers and logistics operations.
Boxes - Corrugated

12x8x12 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 12812

12 x 8 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$39.69 / BUNDLE
IN STOCK Eliminate carton sizers and reduce packaging inventory with these ECT-32 kraft corrugated boxes featuring pre-scored multi-depth construction. Fold to 4 different heights–perfect for right-sizing shipments and lowering parcel service fees. Strong single-wall design built for warehouse efficiency.
Boxes - Corrugated

11.75x8.75x8.75 ECT-32 Multi-Depth Kraft Corrugated Shipping Boxes 25-Pack

PN: MD1188

11 3/4 x 8.75 x 8 3/4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$25.82 / BUNDLE
IN STOCK ECT-32 single-wall kraft corrugated boxes in 11.75" x 8.75" x 8.75" dimensions–the ideal size for standard paper formats, catalogs, and printed collateral. Sold as a bundle of 25 units with proven stacking performance and crush resistance. Protect your shipments with reliable, cost-effective packaging engineered for warehouse efficiency.
Boxes - Corrugated

11.75x8.75x8.75 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1188

11 3/4 x 8.75 x 8 3/4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$25.95 / BUNDLE
IN STOCK Professional white corrugated shipping cartons built with ECT-32 single-wall strength, sized 11.75" x 8.75" x 4.75" for medium-weight products. Pristine white surface ensures printed labels and shipping instructions stand out clearly. Sold in bundles of 25 for consistent inventory management.
Boxes - Corrugated

11.75x8.75x4.75 ECT-32 White Corrugated Shipping Boxes 25-Pack

PN: 1184SCW

11 3/4 x 8.75 x 4 3/4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$25.82 / BUNDLE
IN STOCK 11.25x8.75x6 ECT-48 Double Wall Corrugated Boxes - Shipping, Bundle of 15
Boxes - Corrugated

11.25x8.75x6 ECT-48 Double Wall Corrugated Boxes 15-Pack

PN: HD1186RDW

11 1/4 x 8.75 x 6 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$35.86 / BUNDLE
IN STOCK 10x10x10 W5C Weather-Resistant Corrugated Boxes - 250# Single Wall, Bundle of 25
Boxes - Corrugated

10x10x10 Kraft Corrugated Shipping Boxes 25-Pack

PN: 101010W5C

10 x 10 x 10 in W5c - 250# Single Wall Corrugated 25 PER BUNDLE
$142.70 / BUNDLE
IN STOCK Protect high-value shipments with ECT-48 double wall kraft corrugated boxes engineered for maximum compression strength and stacking performance. 10" x 10" x 8" dimensions ship flat in bundles of 15, reducing storage footprint and freight costs. Heavy-duty construction eliminates damage claims on goods in transit.
Boxes - Corrugated

10x10x8 ECT-48 Kraft Double Wall Corrugated Shipping Boxes 15-Pack

PN: HD10108DW

10 x 10 x 8 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$43.98 / BUNDLE
IN STOCK 10x8x12 Kraft Corrugated Shipping Boxes, 1,050 Pack Pallet, 32 ECT
Boxes - Corrugated

10x8x12 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 10812

10 x 8 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$26.42 / BUNDLE
IN STOCK Ship tall items efficiently with our 6x6x14 corrugated boxes–ECT-32 kraft single-wall construction rated for reliable stacking and freight protection. End-loading design speeds packing, while flat-bundle shipping maximizes your warehouse space. 25-box bundle.
Boxes - Corrugated

6x6x14 ECT-32 Kraft Corrugated Shipping Boxes

PN: 6614

6 x 6 x 14 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$31.75 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 13"8"6" dimensions ship and store flat, cutting warehouse overhead and freight costs. Single-wall construction delivers industry-standard durability. Bundle of 25 boxes provides volume savings for high-throughput fulfillment operations.
Boxes - Corrugated

13x8x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1386

13 x 8 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$39.28 / BUNDLE
IN STOCK Premium white corrugated shipping boxes in 11.75 x 8.75 x 8.75" dimensions with ECT-32 single-wall construction. Each bundle includes 25 boxes ready to seal and ship. The crisp white finish makes applied labels and shipping instructions instantly visible–perfect for e-commerce, fulfillment, and logistics operations requiring professional appearance with reliable performance.
Boxes - Corrugated

11.75x8.75x8.75 ECT-32 White Corrugated Shipping Boxes 25-Pack

PN: 1188W

11 3/4 x 8.75 x 8 3/4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$28.48 / BUNDLE
IN STOCK Eliminate carton sizer equipment and reduce your SKU count with these pre-scored multi-depth corrugated boxes. Simply fold to your desired height (up to 4.75") and ship at the right size every time. ECT-32 kraft construction delivers proven stacking performance and freight efficiency for warehouse and fulfillment operations.
Boxes - Corrugated

11.75x8.75x4.75 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 25-Pack

PN: MD1184SC

11 3/4 x 8.75 x 4 3/4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$23.17 / BUNDLE
IN STOCK 11.75x8.75x4.75 Kraft Corrugated Shipping Boxes, 1,225 Pack Pallet, 32 ECT
Boxes - Corrugated

11.75x8.75x4.75 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1184SC

11 3/4 x 8.75 x 4 3/4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$22.77 / BUNDLE
IN STOCK 10x10x10 ECT-48 Double Wall Corrugated Boxes, 15-Pack
Boxes - Corrugated

10x10x10 ECT-48 Double Wall Corrugated Boxes 15-Pack

PN: HD101010DW

10 x 10 x 10 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$27.33 / BUNDLE
IN STOCK Eliminate carton sizer needs with pre-scored multi-depth corrugated boxes that fold to your exact requirements. Each box in this bundle of 25 adjusts from 8.5" to 12" height, delivering perfect-fit packaging that cuts parcel service costs and warehouse inventory complexity. ECT-32 kraft construction provides proven stacking strength.
Boxes - Corrugated

8.5x8.5x12 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 25-Pack

PN: MD8812R

8 1/2 x 8 1/2 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$24.69 / BUNDLE

Product Help Request

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Buying path

Buy Boxes & Mailers by the specs that change the order

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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 ->