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 ECT-32 kraft corrugated boxes sized 25" x 16" x 16" deliver reliable stacking performance for high-volume shipping operations. Sold in bundles of 10 to maximize freight efficiency and reduce per-unit costs. Built tough for warehouse and fulfillment environments.
Boxes - Corrugated

25x16x16 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 251616

25 x 16 x 16 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$37.15 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 24" × 17" × 15" deliver reliable stacking strength and freight efficiency for high-volume warehouse operations. Each bundle contains 15 boxes, reducing per-unit costs and simplifying bulk ordering. Fully recyclable kraft construction meets sustainability and performance standards for demanding fulfillment environments.
Boxes - Corrugated

24x17x15 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 241715

24 x 17 x 15 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$56.74 / BUNDLE
IN STOCK Packrift's 24x17x12 corrugated boxes deliver ECT-32 single-wall kraft construction built for warehouse-scale shipping operations. Bundle of 15 boxes provides proven stacking performance and cost-efficient freight density for fulfillment centers. Recyclable kraft cardboard reduces environmental impact while maintaining durability.
Boxes - Corrugated

24x17x12 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 241712

24 x 17 x 12 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$48.05 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 24x17x3" dimensions designed for shallow-profile products that don't require deep cartons. Bundle of 25 ships flat, maximizing your warehouse storage efficiency and reducing freight costs. Ideal for apparel, books, frames, and artwork.
Boxes - Corrugated

24x17x3 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 24173

24 x 17 x 3 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$106.11 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 26" × 15" × 12" deliver dependable stacking performance for high-volume shipping and storage operations. Sold as a bundle of 20 units, these standard-strength cardboard shipping boxes maximize freight efficiency while maintaining structural integrity. Fully recyclable and built for demanding warehouse environments.
Boxes - Corrugated

26x15x12 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 261512

26 x 15 x 12 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$69.24 / BUNDLE
IN STOCK Ship tall items efficiently with ECT-32 kraft corrugated boxes in 5x5x36 dimensions. End-loading design allows fast, secure sealing without additional tools. Bundle of 25 boxes ships flat to maximize freight efficiency and storage space in your warehouse.
Boxes - Corrugated

5x5x36 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 5536

5 x 5 x 36 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$56.37 / BUNDLE
IN STOCK Premium ECT-32 corrugated outer mirror boxes engineered for safe fragile glass transport. Pre-printed with "Fragile Glass" and "Do Not Lay Flat" handling instructions. Sold in bundles of 10 for efficient fulfillment centers and moving operations.
Boxes - Corrugated

37 5/16x4 1/16x31 ECT-32 Mirror Box 10-Pack

PN: OUTERMIRROR

37 5/16 x 4 1/16 x 31 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$87.18 / BUNDLE
IN STOCK Ship elongated items efficiently with these 33x8.5x5" ECT-32 kraft corrugated boxes. Long-side opening design eliminates packing friction and speeds fulfillment. Sold in bundles of 25, shipped flat to maximize your warehouse space and reduce inbound freight costs.
Boxes - Corrugated

33x8.5x5 ECT-32 Kraft Long Corrugated Shipping Boxes 25-Pack

PN: 3385

33 x 8.5 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$60.33 / BUNDLE
IN STOCK 12x12x30 Kraft Corrugated Shipping Boxes, 390 Pack Pallet, 32 ECT
Boxes - Corrugated

12x12x30 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 121230

12 x 12 x 30 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$42.55 / BUNDLE
IN STOCK Adjustable two-piece telescoping outer carton designed for tall and irregularly shaped items. ECT-32 kraft corrugated construction with full overlap (FOL) bottom delivers superior stacking strength and freight protection. Sold in bundles of 10–pair with T37430INNER inner box to complete your set.
Boxes - Corrugated

37.5x4.5x30 ECT-32 Kraft Telescoping Outer Box 10-Pack

PN: T37430OUTER

37 1/2 x 4.5 x 30 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$107.86 / BUNDLE
IN STOCK Ship long, narrow items efficiently with these 30x12x12 corrugated cartons featuring wide side openings for fast packing. ECT-32 single-wall kraft construction delivers reliable protection while minimizing freight costs through a tall, compact footprint. Sold flat in bundles of 15–maximize your warehouse storage and cut per-unit costs.
Boxes - Corrugated

30x12x12 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 301212

30 x 12 x 12 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$42.08 / BUNDLE
IN STOCK 30x12x4 Kraft Corrugated Shipping Boxes, 325 Pack Pallet, 32 ECT
Boxes - Corrugated

30x12x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 30124

30 x 12 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$88.21 / BUNDLE
IN STOCK Durable ECT-32 kraft corrugated boxes designed for reliable mid-weight shipping and storage. Each bundle includes 20 boxes measuring 28" x 14" x 14"–optimized for efficient pallet stacking and freight consolidation. Built to protect contents while maximizing warehouse space.
Boxes - Corrugated

28x14x14 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 281414

28 x 14 x 14 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$68.36 / BUNDLE
IN STOCK Industrial-strength 26x16x19 corrugated shipping boxes built from ECT-32 kraft material for reliable stacking and freight efficiency. Sold in bundles of 10 to maximize your packaging volume and reduce per-unit costs. Fully recyclable kraft construction meets sustainability standards for warehouse and fulfillment operations.
Boxes - Corrugated

26x16x19 ECT-32 Kraft Corrugated Shipping Boxes 10-Pack

PN: 261619

26 x 16 x 19 in ECT-32 Single Wall Corrugated 10 PER BUNDLE
$41.09 / BUNDLE
IN STOCK Industrial-grade 26x16x14 corrugated boxes manufactured from ECT-32 kraft material for reliable mid-size shipments. Each bundle includes 15 boxes, optimized for freight efficiency and vertical stacking performance. Recyclable kraft construction reduces waste while maintaining superior crush resistance.
Boxes - Corrugated

26x16x14 ECT-32 Kraft Corrugated Shipping Boxes 15-Pack

PN: 261614

26 x 16 x 14 in ECT-32 Single Wall Corrugated 15 PER BUNDLE
$55.47 / BUNDLE
IN STOCK Industrial-grade 26x16x10 corrugated shipping boxes built with ECT-32 single-wall kraft material for reliable stacking and protection. This bundle of 20 kraft cartons delivers standard strength performance at volume pricing. Ideal for warehouse fulfillment, storage, and mid-weight shipping applications.
Boxes - Corrugated

26x16x10 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 261610

26 x 16 x 10 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$65.05 / BUNDLE

Product Help Request

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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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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 ->