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 Save on bulk shipping with these 16x16x10 corrugated boxes–trusted by warehouse managers for reliable stacking and freight efficiency. ECT-32 kraft construction delivers standard industrial strength in every bundle of 25. Recyclable kraft material reduces waste while maintaining durability.
Boxes - Corrugated

16x16x10 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 161610

16 x 16 x 10 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$50.85 / BUNDLE
IN STOCK Dependable 16x16x9" corrugated shipping boxes with ECT-32 single-wall construction for solid stacking performance and medium-weight freight. This 25-box bundle delivers reliable protection at competitive bulk pricing–ideal for warehouse managers optimizing cost per shipment without sacrificing durability.
Boxes - Corrugated

16x16x9 ECT-32 Kraft Corrugated Boxes 25-Pack

PN: 16169

16 x 16 x 9 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$58.63 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 16x16x8 dimensions deliver dependable protection for mid-weight industrial shipments. Single-wall construction balances durability with cost efficiency across warehouse operations. Bundle of 25 boxes–ideal for frequent shippers managing volume and freight costs.
Boxes - Corrugated

16x16x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 16168

16 x 16 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$46.99 / BUNDLE
IN STOCK ECT-32 single-wall kraft corrugated boxes sized 16" × 16" × 7" deliver reliable strength for mid-weight shipping and storage. This 25-box bundle offers cost-effective packaging for warehouses, fulfillment centers, and distribution operations. Fully recyclable and ready to ship.
Boxes - Corrugated

16x16x7 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 16167

16 x 16 x 7 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$51.03 / BUNDLE
IN STOCK Pre-scored multi-depth corrugated boxes that fold to 2", 4", or 6" heights–no carton sizer needed. Consolidate inventory, cut parcel costs, and eliminate waste with one versatile ECT-32 kraft carton. Sold in bundles of 25.
Boxes - Corrugated

16x16x6 ECT-32 Kraft Multi-Depth Corrugated Shipping Boxes 25-Pack

PN: MD16166

16 x 16 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$49.18 / BUNDLE
IN STOCK 16x16x6 Kraft Corrugated Shipping Boxes, 650 Pack Pallet, 32 ECT
Boxes - Corrugated

16x16x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 16166

16 x 16 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$42.78 / BUNDLE
IN STOCK 16x16x5 Kraft Corrugated Shipping Boxes, 600 Pack Pallet, 32 ECT
Boxes - Corrugated

16x16x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 16165

16 x 16 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$47.20 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 16x16x4" dimensions deliver proven stacking strength for high-volume shipping operations. These shallow-depth cartons maximize freight efficiency while protecting apparel, books, frames, and artwork. Ships flat in bundles of 25 to reduce storage footprint and logistics costs.
Boxes - Corrugated

16x16x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 16164

16 x 16 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$46.60 / BUNDLE
IN STOCK 16x16x3 Kraft Corrugated Shipping Boxes, 525 Pack Pallet, 32 ECT
Boxes - Corrugated

16x16x3 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 16163

16 x 16 x 3 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$52.90 / BUNDLE
IN STOCK ECT-32 kraft corrugated cartons designed for long, narrow items–wine bottles, umbrellas, carpet rolls, and more. 26" x 6" x 6" dimensions with convenient long-side opening for fast packing. Bundle of 25 boxes ships flat to maximize freight efficiency and storage space.
Boxes - Corrugated

26x6x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 2666

26 x 6 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$40.22 / BUNDLE
IN STOCK 24x8x4 Kraft Corrugated Shipping Boxes, 600 Pack Pallet, 32 ECT
Boxes - Corrugated

24x8x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 2484

24 x 8 x 4 in ECT-32 Corrugated 25 PER BUNDLE
$46.75 / BUNDLE
IN STOCK ECT-48 heavy-duty double wall corrugated boxes engineered for maximum protection and stacking performance. 20" x 12" x 12" kraft cartons rated for demanding warehouse and fulfillment environments. Ships flat in bundles of 15 to minimize storage footprint and freight costs.
Boxes - Corrugated

20x12x12 ECT-48 Double Wall Corrugated Boxes 15-Pack

PN: HD201212DW

20 x 12 x 12 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$55.39 / BUNDLE
IN STOCK Premium ECT-32 kraft corrugated boxes in 20" x 12" x 6" dimensions–designed for shallow-depth products like apparel, books, artwork, and picture frames. Ships flat to maximize storage efficiency and reduce shipping costs. Sold as a bundle of 25 cartons.
Boxes - Corrugated

20x12x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 20126

20 x 12 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$40.66 / BUNDLE
IN STOCK ECT-32 single-wall kraft corrugated boxes sized 19"×13"×13" for reliable mid-weight shipping and storage. Bundle of 25 boxes per order–ideal for warehouse fulfillment operations managing steady-state inventory. Recyclable, stackable, and cost-optimized for volume buyers.
Boxes - Corrugated

19x13x13 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 191313

19 x 13 x 13 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$61.44 / BUNDLE
IN STOCK Premium ECT-48 double wall corrugated boxes engineered for maximum protection and stacking performance. These 18x14x14 kraft cartons deliver heavy-duty construction that keeps fragile shipments secure while optimizing warehouse storage. Bundle of 15 ships flat to reduce freight costs and on-site space requirements.
Boxes - Corrugated

18x14x14 ECT-48 Double Wall Corrugated Shipping Boxes 15-Pack

PN: HD181414DW

18 x 14 x 14 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$61.86 / BUNDLE
IN STOCK Industrial-grade ECT-48 double wall corrugated boxes built for maximum protection and stacking performance. These 18x14x12 kraft cartons handle heavier products without crushing, reducing damage claims and freight costs. Sold as a bundle of 15 and ship flat to maximize warehouse efficiency.
Boxes - Corrugated

18x14x12 ECT-48 Double Wall Corrugated Boxes 15-Pack

PN: HD181412DW

18 x 14 x 12 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$60.72 / BUNDLE

Product Help Request

Send the SKU, quantity, delivery ZIP, and any required specs so we can route the request.

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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Reorder

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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 ->