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 Ship 1-gallon F-style paint cans safely with these UN 4G/Y51.4/S certified hazmat corrugated boxes. ECT-44 kraft construction meets CFR 49 178.601B requirements. Flat-ship design cuts warehouse storage costs–20 cartons per bundle.
Boxes - Corrugated

8 3/16x5 11/16x12 3/8 ECT-44 Corrugated Shipping Boxes 20-Pack

PN: HAZ1047

8 3/16 x 5 11/16 x 12 3/8 in ECT-44 Single Wall Corrugated 20 PER BUNDLE
$136.72 / BUNDLE
IN STOCK 9 7/16x5" ECT-44 Haz Mat Boxes 4-Quart | 25-Pack Kraft Corrugated
Boxes - Corrugated

9 7/16x5 ECT-44 Kraft 4-Quart | Corrugated Haz Mat Boxes 25-Pack

PN: HAZCO4Q

9 7/16 x 5 x 5 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$126.11 / BUNDLE
IN STOCK ECT-48 double wall construction delivers superior stacking strength and impact protection for demanding warehouse operations. These 9x9x9 heavy-duty corrugated boxes ship flat in bundles of 15, maximizing storage efficiency while reducing freight costs. Ideal for high-velocity fulfillment centers requiring reliable, bulk-ready packaging.
Boxes - Corrugated

9x9x9 ECT-48 Heavy Duty Double Wall Corrugated Shipping Boxes 15-Pack

PN: HD999DW

9 x 9 x 9 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$39.33 / BUNDLE
IN STOCK 12x7x5 Kraft Corrugated Shipping Boxes, 1,075 Pack Pallet, 32 ECT
Boxes - Corrugated

12x7x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1275

12 x 7 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$26.26 / BUNDLE
IN STOCK Optimize your fulfillment with ECT-32 kraft corrugated shipping boxes in 11x8x8" dimensions. This 25-pack bundle delivers reliable stacking strength and freight efficiency for warehouse managers managing high-volume operations. Made from sustainable, fully recyclable kraft material–built for performance and cost savings.
Boxes - Corrugated

11x8x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1188R

11 x 8 x 8 in ECT-32 Corrugated 25 PER BUNDLE
$24.92 / BUNDLE
IN STOCK 11x8x6 Kraft Corrugated Shipping Boxes, 1,425 Pack Pallet, 32 ECT
Boxes - Corrugated

11x8x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1186

11 x 8 x 6 in ECT-32 Corrugated 25 PER BUNDLE
$19.65 / BUNDLE
IN STOCK 11x8x5 Kraft Corrugated Shipping Boxes, 1,000 Pack Pallet, 32 ECT
Boxes - Corrugated

11x8x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1185

11 x 8 x 5 in ECT-32 Corrugated 25 PER BUNDLE
$28.04 / BUNDLE
IN STOCK Industry-standard 11" x 8" x 3" corrugated shipping boxes with ECT-32 strength rating for reliable product protection. These kraft cartons ship and store completely flat, maximizing warehouse space and reducing freight costs. Bundle of 25 boxes–the smart choice for high-volume fulfillment operations.
Boxes - Corrugated

11x8x3 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1183

11 x 8 x 3 in ECT-32 Corrugated 25 PER BUNDLE
$25.93 / BUNDLE
IN STOCK 10x9x9 ECT-32 Kraft Corrugated Boxes - Industrial Strength Shipping, Bundle of 25
Boxes - Corrugated

10x9x9 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1099

10 x 9 x 9 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$23.49 / BUNDLE
IN STOCK 10x9x8 Kraft Corrugated Shipping Boxes, 775 Pack Pallet, 32 ECT
Boxes - Corrugated

10x9x8 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1098

10 x 9 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$36.78 / BUNDLE
IN STOCK 10x9x6 Kraft Corrugated Shipping Boxes, 1,200 Pack Pallet, 32 ECT
Boxes - Corrugated

10x9x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1096

10 x 9 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$23.13 / BUNDLE
IN STOCK 10x9x4 Kraft Corrugated Shipping Boxes, 1,025 Pack Pallet, 32 ECT
Boxes - Corrugated

10x9x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1094

10 x 9 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$27.51 / BUNDLE
IN STOCK UN-certified hazmat shipping boxes designed for 1-gallon plastic jugs with ECT-44 single-wall kraft construction. Pre-printed with mandatory hazmat warnings and directional arrows. Bundle of 20 ships flat to maximize warehouse efficiency and minimize storage costs.
Boxes - Corrugated

6x6x12.75 ECT-44 Hazmat Shipping Box 20-Pack

PN: HAZ1050

6 x 6 x 12 3/4 in ECT-44 Single Wall Corrugated 20 PER BUNDLE
$134.29 / BUNDLE
IN STOCK 12x7x7 Kraft Corrugated Shipping Boxes, 1,025 Pack Pallet, 32 ECT
Boxes - Corrugated

12x7x7 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1277

12 x 7 x 7 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$27.54 / BUNDLE
IN STOCK ECT-44 single-wall corrugated hazmat boxes designed to safely ship two 1-gallon plastic jugs per carton. UN-certified (4G/Y19.7/S & 4G/Y19.8/S) with pre-printed hazard warnings and directional arrows. Ships flat to maximize warehouse storage and reduce freight spend–bundle of 20 cartons.
Boxes - Corrugated

12x6x12.75 ECT-44 Hazmat Corrugated Box 20-Pack

PN: HAZ1051

12 x 6 x 12 3/4 in ECT-44 Single Wall Corrugated 20 PER BUNDLE
$135.81 / BUNDLE
IN STOCK 11x8x4 Kraft Corrugated Shipping Boxes, 1,050 Pack Pallet, 32 ECT
Boxes - Corrugated

11x8x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 1184R

11 x 8 x 4 in ECT-32 Corrugated 25 PER BUNDLE
$26.56 / 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

Use filters and product titles to narrow by the specs that affect fit.

Confirm

Open the product page before ordering a case so you can check quantity, unit, and limits.

Reorder

Save the SKU or product link for repeat purchasing and support questions.

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 ->