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 18x16x2 Kraft Corrugated Shipping Boxes, 375 Pack Pallet, 32 ECT
Boxes - Corrugated

18x16x2 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 18162

18 x 16 x 2 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$74.57 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 17x17x14" dimensions deliver proven strength for mid-weight shipping and storage applications. This bundle of 25 units provides consistent stacking performance and freight efficiency for warehouse operations. Built from recyclable kraft corrugated material to reduce packaging costs without compromising box integrity.
Boxes - Corrugated

17x17x14 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 171714

17 x 17 x 14 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$77.13 / BUNDLE
IN STOCK 17x17x12 Kraft Corrugated Shipping Boxes, 400 Pack Pallet, 32 ECT
Boxes - Corrugated

17x17x12 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 171712

17 x 17 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$72.07 / BUNDLE
IN STOCK Engineered for hazardous materials compliance: these 17x17x9 5/16" ECT-44 single-wall corrugated boxes safely contain four 1-gallon paint cans per carton. Pre-printed with mandatory warning labels and orientation arrows, they collapse flat for maximum warehouse efficiency–reducing storage footprint and freight spend by up to 60% compared to rigid alternatives.
Boxes - Corrugated

17x17x9 5/16 ECT-44 Hazmat Paint Can Boxes 10-Pack

PN: HAZ1046

17 x 17 x 9 5/16 in ECT-44 Single Wall Corrugated 10 PER BUNDLE
$121.39 / BUNDLE
IN STOCK Reliable 17x17x8 corrugated boxes engineered for standard-duty shipping and storage. ECT-32 kraft construction delivers proven strength for mid-weight items while maximizing pallet efficiency. Purchase by the bundle of 20 and reduce per-unit costs.
Boxes - Corrugated

17x17x8 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 17178

17 x 17 x 8 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$47.28 / BUNDLE
IN STOCK ECT-32 kraft corrugated cartons designed for shallow products and efficient pallet stacking. 17" x 17" x 6" dimensions provide optimal cubic utilization for apparel, books, frames, and artwork. Sold as a bundle of 20 and ship flat to maximize warehouse space and reduce freight expenses.
Boxes - Corrugated

17x17x6 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 17176

17 x 17 x 6 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$43.32 / BUNDLE
IN STOCK 17x17x4 Kraft Corrugated Shipping Boxes, 550 Pack Pallet, 32 ECT
Boxes - Corrugated

17x17x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 17174

17 x 17 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$51.65 / BUNDLE
IN STOCK Ship flat panel TVs safely with these ECT-44 single-wall kraft corrugated boxes. Dimensions 28" × 6" × 20" with full overlap flaps for maximum crush resistance. Bundle of 5 boxes reduces per-unit cost and freight spend on high-volume shipments.
Boxes - Corrugated

28x6x20 ECT-44 Kraft TV Box 5-Pack

PN: 28620FPFOL

28 x 6 x 20 in ECT-44 Single Wall Corrugated 5 PER BUNDLE
$40.76 / BUNDLE
IN STOCK 22x12x6 Kraft Corrugated Shipping Boxes, 500 Pack Pallet, 32 ECT
Boxes - Corrugated

22x12x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 22126

22 x 12 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$58.16 / BUNDLE
IN STOCK Heavy-duty ECT-32 corrugated boxes sized 20" × 14" × 20" deliver industry-standard strength for demanding warehouse and fulfillment operations. Each bundle includes 20 kraft cartons that collapse flat for maximum storage efficiency and lower freight costs. Perfect for mid-sized shipments requiring reliable stacking performance and protection.
Boxes - Corrugated

20x14x20 ECT-32 Kraft Corrugated Heavy Duty Shipping Boxes 20-Pack

PN: 201420

20 x 14 x 20 in ECT-32-B Corrugated 20 PER BUNDLE
$106.61 / BUNDLE
IN STOCK Premium ECT-48 double wall corrugated boxes designed for demanding warehouse and fulfillment operations. These 20x14x14 kraft cartons deliver maximum stacking strength and impact protection, reducing damage claims and freight costs. Bundle of 15 ships flat to maximize your storage and logistics efficiency.
Boxes - Corrugated

20x14x14 ECT-48 Double Wall Corrugated Boxes 15-Pack

PN: HD201414DW

20 x 14 x 14 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$86.84 / BUNDLE
IN STOCK Professional-grade ECT-48 double wall corrugated boxes designed for demanding fulfillment operations. These 20x14x12 kraft cartons deliver maximum stacking strength and impact protection for mid-size shipments. Bundle of 15 ships flat to maximize your warehouse efficiency and reduce storage costs.
Boxes - Corrugated

20x14x12 ECT-48 Kraft Heavy-Duty Double Wall Corrugated Shipping Boxes 15-Pack

PN: HD201412DW

20 x 14 x 12 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$91.25 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes in 20x14x10" dimensions–engineered for standard-strength shipping and storage demands. Bundle of 20 boxes per order. Recyclable kraft construction delivers reliable protection while reducing packaging costs for high-volume fulfillment operations.
Boxes - Corrugated

20x14x10 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 201410

20 x 14 x 10 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$45.62 / BUNDLE
IN STOCK Heavy-duty ECT-48 kraft corrugated boxes built for maximum stacking strength and impact protection. 20" x 14" x 6" double wall cartons ship flat to maximize your warehouse efficiency. Bundle of 15 reduces per-unit costs and freight spend.
Boxes - Corrugated

20x14x6 ECT-48 Corrugated Shipping Boxes Heavy Duty 15-Pack

PN: HD20146DW

20 x 14 x 6 in D.W./ECT-48 Corrugated 15 PER BUNDLE
$72.57 / BUNDLE
IN STOCK Industrial-grade ECT-48 double wall corrugated boxes engineered for maximum stacking performance and freight efficiency. These 18x16x16 kraft cartons collapse flat for storage and ship in convenient bundles of 10, reducing your per-unit costs and warehouse footprint.
Boxes - Corrugated

18x16x16 ECT-48 Kraft Heavy Duty Double Wall Corrugated Shipping Boxes 10-Pack

PN: HD181616DW

18 x 16 x 16 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$82.96 / BUNDLE
IN STOCK 18x16x16 Kraft Corrugated Shipping Boxes, 380 Pack Pallet, 32 ECT
Boxes - Corrugated

18x16x16 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 181616

18 x 16 x 16 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$59.80 / 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 ->