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 cartons engineered for shallow-product shipping. At 18" × 18" × 2", these boxes deliver premium stacking strength while minimizing cubic weight and freight costs. Sold in bundles of 25 and ship flat to maximize your warehouse storage efficiency.
Boxes - Corrugated

18x18x2 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 18182

18 x 18 x 2 in ECT-32 Corrugated 25 PER BUNDLE
$90.07 / BUNDLE
IN STOCK ECT-32 kraft corrugated long boxes designed for efficient packing of wine bottles, umbrellas, carpet rolls, and other elongated items. Wide opening along the 30" length speeds loading while maintaining structural integrity. Sold flat in convenient 25-box bundles to maximize warehouse storage and reduce freight costs.
Boxes - Corrugated

30x6x6 ECT-32 Kraft Corrugated Long Shipping Boxes 25-Pack

PN: 3066

30 x 6 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$36.76 / BUNDLE
IN STOCK 26x10x10 Kraft Corrugated Shipping Boxes, 525 Pack Pallet, 32 ECT
Boxes - Corrugated

26x10x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 261010

26 x 10 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$53.09 / BUNDLE
IN STOCK 24x12x18 Kraft Single Wall Corrugated Shipping Boxes, 240 Pack Pallet, 32 ECT
Boxes - Corrugated

24x12x18 ECT-32 Kraft Single Wall Corrugated Shipping Boxes 20-Pack

PN: 241218

24 x 12 x 18 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$95.96 / BUNDLE
IN STOCK ECT-32 rated kraft corrugated boxes in 24x12x16" dimensions ship and store flat, cutting your warehouse footprint and freight spend. This bundle of 25 single-wall shipping cartons meets industry standards for mid-weight products. Maximize your pallet density and minimize packaging costs per unit.
Boxes - Corrugated

24x12x16 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 241216

24 x 12 x 16 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$95.26 / BUNDLE
IN STOCK ECT-32 white corrugated boxes in 24x12x12 dimensions deliver professional presentation with durable single-wall construction. Bundle of 25 boxes ideal for retail-ready shipments where labeling and branding visibility matter. Strong stacking performance reduces freight damage and maximizes warehouse efficiency.
Boxes - Corrugated

24x12x12 ECT-32 White Corrugated Shipping Boxes

PN: 241212W

24 x 12 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$67.25 / BUNDLE
IN STOCK Reduce your carton inventory and parcel shipping costs with these 24x12x12 pre-scored multi-depth corrugated boxes. Fold to your desired height without a carton sizer–one box replaces multiple sizes. Made from durable ECT-32 kraft corrugated.
Boxes - Corrugated

24x12x12 ECT-32 Multi-Depth Kraft Corrugated Shipping Boxes 25-Pack

PN: MD241212

24 x 12 x 12 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$63.95 / BUNDLE
IN STOCK 24x12x10 Kraft Corrugated Shipping Boxes, 525 Pack Pallet, 32 ECT
Boxes - Corrugated

24x12x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 241210

24 x 12 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$54.42 / BUNDLE
IN STOCK Right-size shipments and cut carton SKUs with Packrift's 24x12x6 multi-depth corrugated boxes. Pre-scored kraft cardboard folds to 6", 4", or 2" depths–no sizer needed. ECT-32 single wall construction delivers reliable protection while slashing parcel fees and warehouse space.
Boxes - Corrugated

24x12x6 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 20-Pack

PN: MD24126

24 x 12 x 6 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$41.58 / BUNDLE
IN STOCK Ship shallow products efficiently with these 24x12x6 ECT-32 kraft corrugated boxes. Engineered for apparel, books, frames, and artwork with optimal depth-to-strength ratio. Bundle of 20 flat boxes arrives ready to assemble–maximize your warehouse space and reduce freight expense.
Boxes - Corrugated

24x12x6 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 24126

24 x 12 x 6 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$36.84 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 24x12x4" dimensions designed for shallow products that don't require deep cartons. Bundle of 25 ships flat, saving warehouse storage and freight costs while maintaining superior stacking performance and product protection.
Boxes - Corrugated

24x12x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 24124

24 x 12 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$40.27 / BUNDLE
IN STOCK Packrift's 22x14x14 corrugated boxes deliver reliable ECT-32 single-wall strength for high-volume fulfillment operations. Each bundle of 20 kraft cartons maximizes freight efficiency and stackability while cutting per-unit packaging costs. Built for warehouse managers who demand consistent performance without compromise.
Boxes - Corrugated

22x14x14 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 221414

22 x 14 x 14 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$60.52 / BUNDLE
IN STOCK Dependable 22x14x12" corrugated shipping boxes made from ECT-32 kraft material–ideal for medium-weight products in high-volume fulfillment operations. This 20-pack bundle delivers standard-strength performance at volume pricing. Fully recyclable and built for reliable stacking and freight efficiency.
Boxes - Corrugated

22x14x12 ECT-32 Kraft Corrugated Boxes 20-Pack

PN: 221412

22 x 14 x 12 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$44.89 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 22x14x10" dimensions deliver dependable stacking strength for mid-weight products and freight consolidation. This bundle of 20 boxes offers cost-effective packaging for warehouses and fulfillment centers managing consistent shipment volumes. Recyclable kraft material reduces environmental impact while maintaining structural integrity.
Boxes - Corrugated

22x14x10 ECT-32 Kraft Corrugated Shipping Boxes 20-Pack

PN: 221410

22 x 14 x 10 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$47.73 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 22x14x6" dimensions designed for shallow-depth products and optimal freight efficiency. Each bundle of 20 ships flat to maximize warehouse storage and reduce dimensional weight charges. Perfect for apparel, books, artwork, and picture frames.
Boxes - Corrugated

22x14x6 ECT-32 Kraft Corrugated Boxes 20-Pack

PN: 22146

22 x 14 x 6 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$40.66 / BUNDLE
IN STOCK Durable ECT-32 kraft corrugated boxes sized 21" × 15" × 15" deliver reliable stacking performance and freight efficiency for high-volume fulfillment operations. This bundle of 20 shipping cartons offers standard industrial strength at competitive pricing. Fully recyclable and ready to integrate into your packaging workflow.
Boxes - Corrugated

21x15x15 ECT-32 Kraft Corrugated Heavy Duty Shipping Boxes 20-Pack

PN: 211515

21 x 15 x 15 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$59.73 / 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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Confirm

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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 ->