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 Heavy-duty ECT-32 kraft corrugated shipping boxes sized 48" × 24" × 12" for maximum pallet density and freight efficiency. Single-wall construction delivers reliable stacking performance and crush resistance for mid-weight industrial shipments. Sold as bundle of 10 to minimize per-unit costs.
Boxes - Corrugated

48x24x12 ECT-32 Kraft Corrugated Heavy Duty Shipping Boxes 10-Pack

PN: 482412

48 x 24 x 12 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$109.58 / BUNDLE
IN STOCK Industry-standard 48x24x8 corrugated shipping boxes in ECT-32 kraft single-wall construction–proven for heavy-duty warehouse and fulfillment operations. Ships flat to maximize freight efficiency and storage space. Bundle of 10 boxes delivers immediate cost savings and consistent stacking performance.
Boxes - Corrugated

48x24x8 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 48248

48 x 24 x 8 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$139.68 / BUNDLE
IN STOCK 60x12x12 Kraft Double Wall Corrugated Boxes, 65 Pack Pallet, 48 ECT
Boxes - Corrugated

60x12x12 ECT-48 Kraft Double Wall Corrugated Boxes 5-Pack

PN: HD601212DW

60 x 12 x 12 in ECT-48 Double Wall Corrugated 5 PER BUNDLE
$89.54 / BUNDLE
IN STOCK 60x12x12 Kraft Corrugated Shipping Boxes, 100 Pack Pallet, 32 ECT
Boxes - Corrugated

60x12x12 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 601212

60 x 12 x 12 in ECT-32 Corrugated 10 PER BUNDLE
$118.59 / BUNDLE
IN STOCK Heavy-duty 48x24x28 double wall gaylord boxes engineered for demanding warehouse and fulfillment operations. ECT-48 rated corrugated cartons deliver superior stacking strength and crush resistance. Ships flat in bundles of 5 to maximize freight efficiency and storage space.
Boxes - Corrugated

48x24x28 ECT-48 Heavy-Duty Corrugated Double Wall Gaylord Boxes 5-Pack

PN: GL482428DW

48 x 24 x 28 in ECT-48 Double Wall Corrugated 5 PER BUNDLE
$89.78 / BUNDLE
IN STOCK Heavy-duty 48x24x28 ECT-32 corrugated gaylord boxes deliver industry-standard stacking strength for high-volume fulfillment operations. Ships flat in bundles of 5 to maximize warehouse space and reduce freight expenses. Perfect for bulk cargo storage, e-commerce fulfillment, and logistics centers.
Boxes - Corrugated

48x24x28 ECT-32 Heavy-Duty Corrugated Gaylord Box 5-Pack

PN: GL482428

48 x 24 x 28 in ECT-32 Corrugated 5 PER BUNDLE
$58.03 / BUNDLE
IN STOCK Industrial-grade 48x24x12 double wall corrugated shipping cartons built from ECT-48 kraft material deliver maximum stacking performance and impact protection. Heavy-duty construction handles demanding warehouse environments and long-haul freight. Bundle of 5 ships flat to maximize storage efficiency and reduce freight costs.
Boxes - Corrugated

48x24x12 ECT-48 Kraft Heavy-Duty Double Wall Corrugated Shipping Boxes 5-Pack

PN: HD482412DW

48 x 24 x 12 in ECT-48 Double Wall Corrugated 5 PER BUNDLE
$67.42 / BUNDLE
IN STOCK Ship tall items efficiently with these 12x12x60 corrugated boxes made from durable ECT-32 kraft material. End-loading design allows quick insertion and sealing. Sold flat in bundles of 10 to maximize your warehouse storage and reduce freight costs.
Boxes - Corrugated

12x12x60 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 121260

12 x 12 x 60 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$83.64 / BUNDLE
IN STOCK Adjustable two-piece telescoping inner boxes built from ECT-32 single-wall corrugated kraft for superior strength and consistent stacking performance. 4" x 4" x 72" dimensions accommodate tall and irregularly shaped items with a full overlap bottom design. Sold in bundles of 25–pair with T4472OUTER to complete the set.
Boxes - Corrugated

4x4x72 ECT-32 Kraft Telescoping Inner Box 25-Pack

PN: T4472INNER

4 x 4 x 72 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$143.44 / BUNDLE
IN STOCK Adjustable two-piece telescoping outer cartons designed for tall and irregularly shaped items. ECT-32 single wall kraft corrugated with FOL bottom reinforcement delivers reliable stacking performance and edge crush strength. Sold in bundles of 25–pair with T4472INNER inner boxes to complete your set.
Boxes - Corrugated

4.5x4.5x72 ECT-32 Kraft Telescoping Outer Boxes 25-Pack

PN: T4472OUTER

4 1/2 x 4 1/2 x 72 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$153.87 / BUNDLE
IN STOCK Ship tall items with confidence using these 4x4x72 corrugated boxes made from durable ECT-32 kraft material. End-loading design enables fast insertion and sealing, reducing pack time and labor costs. Sold as a convenient bundle of 15 boxes, shipped flat to maximize your warehouse space and freight efficiency.
Boxes - Corrugated

4x4x72 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 4472

4 x 4 x 72 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$50.36 / BUNDLE
IN STOCK Industrial-grade ECT-44 kraft corrugated side loading boxes designed for vertical storage and efficient freight. 20x8x60 dimensions maximize pallet stacking and reduce handling labor. Bundle of 5 ships flat–save 40% storage space vs. assembled inventory.
Boxes - Corrugated

20x8x60 ECT-44 Kraft Side Loading Box 5-Pack

PN: HD20860FOL

20 x 8 x 60 in ECT-44 Single Wall Corrugated 5 PER BUNDLE
$69.51 / BUNDLE
IN STOCK ECT-44 kraft corrugated side loading boxes designed for tall, narrow products that demand secure stacking performance. Each 14" × 4" × 68" carton ships flat in a bundle of 10, reducing storage footprint by up to 85% before assembly. Built for warehouse managers who need reliable freight efficiency without compromising structural integrity.
Boxes - Corrugated

14x4x68 ECT-44 Kraft Side Loading Boxes 10-Pack

PN: HD14468FOL

14 x 4 x 68 in ECT-44 Single Wall Corrugated 10 PER BUNDLE
$139.73 / BUNDLE
IN STOCK Adjustable two-piece telescoping outer cartons engineered for tall and irregularly shaped items. ECT-32 kraft corrugated construction with FOL bottom delivers superior stacking strength and freight stability. Sold as 15-unit bundle–pair with T6672INNER for complete packaging solution.
Boxes - Corrugated

6.5x6.5x72 ECT-32 Kraft Telescoping Outer Boxes 15-Pack

PN: T6672OUTER

6 1/2 x 6 1/2 x 72 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$120.31 / BUNDLE
IN STOCK Adjust the height of your tall and irregularly shaped shipments with these ECT-32 kraft telescoping inner boxes. Each bundle of 15 features a reinforced FOL bottom and two-piece design for reliable stacking and freight efficiency. Pair with T6672OUTER to complete your telescoping set.
Boxes - Corrugated

6x6x72 ECT-32 Kraft Telescoping Inner Boxes 15-Pack

PN: T6672INNER

6 x 6 x 72 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$88.41 / BUNDLE
IN STOCK 6x6x72 Kraft Corrugated Shipping Boxes, 255 Pack Pallet, 32 ECT
Boxes - Corrugated

6x6x72 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 6672

6 x 6 x 72 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$67.96 / 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 ->