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 Dependable 6x4x4 corrugated shipping boxes with ECT-32 single-wall construction deliver reliable protection for small to medium items. These kraft cardboard boxes stack efficiently in warehouse environments and offer proven performance at an economical price point. Order in bundles of 25 and reduce per-unit packaging costs.
Boxes - Corrugated

6x4x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 644

6 x 4 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$10.00 / BUNDLE
IN STOCK ECT-32 single wall corrugated boxes in 5x5x3" dimensions deliver reliable strength for small-to-medium item shipping. This 25-box bundle offers cost-effective protection with proven stacking performance. Kraft construction ensures recyclability and sustainable packaging.
Boxes - Corrugated

5x5x3 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 553

5 x 5 x 3 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$14.89 / BUNDLE
IN STOCK Scored multi-depth corrugated boxes that fold to your desired height–no carton sizer needed. These 6x4x4 ECT-32 kraft boxes consolidate 3-4 box sizes into one SKU, cutting inventory management and shipping costs. Sold as a bundle of 25.
Boxes - Corrugated

6x4x4 ECT-32 Kraft Adjustable Multi-Depth Corrugated Shipping Boxes 25-Pack

PN: MD644

6 x 4 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$11.01 / BUNDLE
IN STOCK Heavy-duty 6x4x3" corrugated boxes in ECT-32 kraft material deliver reliable stacking performance for high-volume fulfillment operations. Each 25-box bundle reduces per-unit costs while maintaining superior crush resistance. Recyclable kraft construction meets eco-conscious supply chain standards.
Boxes - Corrugated

6x4x3 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 643

6 x 4 x 3 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$16.61 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes in 6x4x2" dimensions deliver reliable standard strength protection for small parts, samples, and lightweight shipments. Sold as a bundle of 25 boxes, these kraft cartons are fully recyclable and engineered for efficient warehouse stacking and freight consolidation. Ideal for e-commerce fulfillment centers and industrial shipping operations.
Boxes - Corrugated

6x4x2 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 642

6 x 4 x 2 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$15.51 / BUNDLE
IN STOCK 5x5x5 White Corrugated Shipping Boxes Single Wall, 1,350 Pack Pallet, 32 ECT
Boxes - Corrugated

5x5x5 ECT-32 White Corrugated Shipping Boxes Single Wall 25-Pack

PN: 555W

5 x 5 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$20.57 / BUNDLE
IN STOCK ECT-32 kraft corrugated cube boxes sized 5x5x5" for efficient packaging of round, cylindrical, and irregular products. Sold as a 25-box bundle, flat-packed for maximum warehouse storage efficiency. Single-wall construction delivers proven durability at competitive per-unit cost.
Boxes - Corrugated

5x5x5 ECT-32 Kraft Corrugated Cube Shipping Boxes 25-Pack

PN: 555

5 x 5 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$11.22 / BUNDLE
IN STOCK 5x5x4 Kraft Corrugated Shipping Boxes, 2,300 Pack Pallet, 32 ECT
Boxes - Corrugated

5x5x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 554

5 x 5 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$12.10 / BUNDLE
IN STOCK Dependable ECT-32 single wall corrugated shipping boxes in 4x4x6" dimensions, sold as a 25-pack bundle. Perfect for small parts, samples, and lightweight merchandise fulfillment. Kraft construction delivers proven strength at cost-effective pricing for warehouse and fulfillment operations.
Boxes - Corrugated

4x4x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 446

4 x 4 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$12.95 / BUNDLE
IN STOCK Packrift's 6x5x5 corrugated boxes deliver proven ECT-32 strength for mid-weight products and everyday fulfillment. Each bundle includes 25 kraft cartons–ready to ship, stack, and recycle. Perfect for warehouse managers seeking dependable, volume-efficient packaging.
Boxes - Corrugated

6x5x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 655

6 x 5 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$10.30 / BUNDLE
IN STOCK ECT-32 single wall kraft corrugated boxes in 6x5x4 dimensions–the go-to standard strength shipping solution for small to medium items. Sold as a bundle of 25, these recyclable cardboard boxes offer proven durability and cost efficiency for warehouse and fulfillment operations.
Boxes - Corrugated

6x5x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 654

6 x 5 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$10.59 / BUNDLE
IN STOCK Standard-strength 7x4x4 corrugated shipping cartons built from ECT-32 kraft material for consistent warehouse performance. Each 25-pack bundle delivers reliable stacking capacity and proven freight efficiency for high-volume fulfillment operations. Recyclable kraft construction keeps costs predictable and sustainable.
Boxes - Corrugated

7x4x4 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 744

7 x 4 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$11.80 / BUNDLE
IN STOCK Packrift's 5x5x6 corrugated boxes deliver proven ECT-32 strength for efficient small-item shipping. Each 25-pack bundle features kraft single-wall construction rated for reliable stacking and freight performance. Perfect for e-commerce fulfillment, retail packaging, and warehouse storage at volume savings.
Boxes - Corrugated

5x5x6 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 556

5 x 5 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$19.71 / BUNDLE
IN STOCK Engineered ECT-44 single-wall corrugated hazmat shipping boxes designed for 1-quart paint cans. Pre-printed with CFR 49 178.601B compliance markings and directional arrows. Ship flat to maximize freight efficiency and cut storage overhead by 40%–25 boxes per bundle.
Boxes - Corrugated

5 1/8x5 1/8x6 3/16 ECT-44 Hazmat Paint Can Boxes

PN: HAZ1041

5 1/8 x 5 1/8 x 6 3/16 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$136.89 / BUNDLE
IN STOCK Ship narrow and elongated items efficiently with these 8" 4" 4" ECT-32 kraft corrugated boxes. Wide openings along the length enable fast packing of wine bottles, umbrellas, carpet rolls, and similar products. Sold flat in bundles of 25 for maximum freight efficiency and storage savings.
Boxes - Corrugated

8x4x4 ECT-32 Kraft Corrugated Long Shipping Boxes 25-Pack

PN: 844

8 x 4 x 4 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$11.74 / BUNDLE
IN STOCK Reliable 7x5x5 corrugated shipping cartons with ECT-32 single wall kraft construction for standard-duty applications. Sold in bundles of 25 to maximize your shipping efficiency and reduce per-unit costs. Fully recyclable kraft material meets eco-conscious warehouse standards.
Boxes - Corrugated

7x5x5 ECT-32 Kraft Corrugated Shipping Boxes 25-Pack

PN: 755

7 x 5 x 5 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$10.86 / 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.

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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 ->