ASTM D5118 certified

ASTM D5118 Certified

ASTM D4727 certified

ASTM D4727 Certified

CSA Class Code A certified

CSA Class Code A Certified

Sustainable Folding Corrugated Cardboard Boxes

Sustainable folding corrugated cardboard boxes from Cardboard Boxes 4U offer eco-friendly, recyclable packaging across 1,300+ sizes and configurations. From standard RSC and multi-depth boxes to specialty military-spec and bulk Gaylord containers, these solutions serve e-commerce, industrial, moving, and government applications with reliable structural performance.

Long Corrugated Boxes
Military Boxes
File Storage Boxes
Stock Boxes
Shipping Boxes
Flat Corrugated Boxes
Printers Boxes - Corrugated Cardboard Boxes
Telescoping Boxes
V3C Boxes ASTM D5118
Multi-Depth Corrugated Boxes
Moving Boxes
Sheets & Pads
White Corrugated Boxes
Bulk Cargo Boxes / Gaylord Boxes
Gaylord Boxes
Hazardous Material Boxes

Our Range of Products

Long Corrugated Boxes

Long Corrugated Boxes

  • 63+ long box sizes up to 48" length
  • Ideal for rods, pipes, clubs & posters
  • Affordable pricing starting at $0.91 per unit
Military Boxes

Military Boxes

  • MIL-SPEC V3c & W5c weather-resistant options
  • ASTM D5118 compliant for military applications
  • Custom sizes made to exact order specifications
File Storage Boxes

File Storage Boxes

  • 6 closure styles: Auto-Lock, String & Button & more
  • Color-coded options: Kraft, White, Black, Green & more
  • Fits letter, legal & oversized document formats
Stock Boxes

Stock Boxes

  • Custom sizes reduce void fill & shipping costs
  • Full-color custom printing for branded packaging
  • Low MOQ starting at just 100 pieces
Shipping Boxes

Shipping Boxes

  • 1,000+ stock sizes for immediate fulfillment
  • Single, double & triple wall construction options
  • ASTM D5118 compliant; ECT & Mullen rated
Flat Corrugated Boxes

Flat Corrugated Boxes

  • Shallow depth from 2-3/8" to 8" for flat items
  • 84 size variations from 7"x7" to 36"x24"
  • Cost-effective units starting at $0.98 each

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Frequently Asked Questions

Is corrugated cardboard environmentally friendly?

Yes. Corrugated cardboard is one of the most recycled packaging materials in the world. It is made from renewable wood fiber, is fully recyclable after use, and breaks down naturally. Cardboard Boxes 4U's corrugated boxes are recyclable, supporting sustainable packaging practices for businesses committed to reducing environmental impact.

Are corrugated sheets eco-friendly?

What corrugated box wall types are available?

Can I order custom-sized corrugated boxes?

What compliance standards do these boxes meet?

Are multi-depth corrugated boxes available?

What is the minimum order quantity for corrugated boxes?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

E-Commerce & Retail

E-Commerce & Retail

Right-sized RSC, flat, and multi-depth boxes minimize dimensional weight charges and optimize e-commerce fulfillment throughput.

Industrial & Bulk Shipping

Industrial & Bulk Shipping

Triple wall, Gaylord, and bulk cargo boxes handle palletized freight and high-volume industrial cargo shipments reliably.

Moving & Relocation

Moving & Relocation

Specialty wardrobe, dish pack, mirror, mattress, and multi-depth boxes protect household goods during residential and commercial moves.

Government & Military

Government & Military

MIL-SPEC V3C and W5C corrugated boxes compliant with ASTM D5118 meet stringent government and defense procurement packaging requirements.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

You might also like

Why E-Commerce, Industrial & Government Buyers Choose Cardboard Boxes 4 U

1,300+ Box Sizes Ready to Ship

With over 1,300 stock corrugated box sizes available, you get the exact fit for your product — reducing void fill, dimensional weight charges, and waste.

Government & Military Spec Compliance

Cardboard Boxes 4U specializes in ASTM D5118, ASTM D4727, and MIL-SPEC corrugated configurations including V3C, W5C, and V11C grades for regulated applications.

Custom Boxes in 7–10 Business Days

From branded retail cartons to made-to-order specialty boxes, custom production runs are turned around in as few as 7–10 business days with low 100-piece minimums.

Get the Right Box for Your Application — Fast

Submit your requirements and our packaging specialists will respond with sizing, spec, and pricing options tailored to your order volume and application.

Contact Us Today

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