Sustainably Sourced Kraft Material certified

Sustainably Sourced Kraft Material

ECT-Rated Corrugated Strength certified

ECT-Rated Corrugated Strength

Flat Corrugated Shipping Boxes

Flat corrugated shipping boxes ship and store flat, then assemble in seconds into rigid mailers, long & narrow sleeves, cube boxes, and specialty moving cartons. Built from 200#–275# Test Kraft single- or double-wall corrugated, they protect e-commerce parcels, fragile goods, and bulky items while saving warehouse space and cutting freight costs.

Mailer Box
Long and Narrow Corrugated Box
Corrugated Cube Box
Specialty Moving Box

Our Range of Products

Mailer Box

Mailer Box

  • Self-locking side-load design, no tape needed
  • 200# Test Kraft for reliable protection
  • In-stock with low minimum order quantities
Long and Narrow Corrugated Box

Long and Narrow Corrugated Box

  • 3 sizes from 10" to 36" for narrow items
  • Ships flat-packed to save storage space
  • Single or double wall for extra strength
Corrugated Cube Box

Corrugated Cube Box

  • Equal 24x24x24in cube fits bulky items
  • ECT-44 double wall for superior stacking
  • Flat shipping saves space, quick assembly
Specialty Moving Box

Specialty Moving Box

  • Wardrobe box with hanger bar, wrinkle-free
  • Double-wall Dish Pack protects fragile items
  • Reusable HDPE box adds long-term value

Frequently Asked Questions

What is a flat corrugated shipping box?

A flat corrugated shipping box is a carton constructed from corrugated Kraft board that ships and stores unassembled, lying flat to save space, then folds and locks into a rigid box shape on demand. This design reduces warehouse footprint and inbound freight costs while still providing durable protection for shipped goods.

What sizes are available for corrugated shipping boxes?

What's the difference between single wall and double wall corrugated boxes?

What is the minimum order quantity for shipping boxes?

Can these boxes be shipped and stored flat before use?

What industries commonly use flat corrugated shipping boxes?

Is volume or custom pricing available for bulk orders?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

E-Commerce & Retail Fulfillment

E-Commerce & Retail Fulfillment

Self-locking mailer and shipping boxes streamline pick-pack-ship operations for online orders and retail distribution.

Moving & Relocation

Moving & Relocation

Cube boxes, wardrobe boxes, and dish packs protect bulky items, garments, and fragile goods during residential moves.

Warehousing & 3PL Logistics

Warehousing & 3PL Logistics

Flat-packed boxes reduce storage footprint while double-wall construction withstands pallet stacking and handling.

Manufacturing & Industrial Shipping

Manufacturing & Industrial Shipping

Long & narrow corrugated boxes protect rods, poles, and elongated hardware components during industrial transit.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

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Why E-Commerce, Moving & Logistics Teams Choose Meridian Packaging

Ships Flat, Saves Storage Space

Boxes ship and store flat-packed, cutting warehouse footprint and freight costs, then assemble into rigid cartons in seconds.

Low Minimums, Fast Turnaround

In-stock inventory with minimum orders of just one bundle keeps fulfillment operations supplied without long lead times.

Engineered Strength & Durability

Single and double-wall 200#-275# Test Kraft construction with ECT-32 to ECT-44 ratings protects items through the full supply chain.

Ready to Streamline Your Shipping Box Supply?

Share your box sizes, wall type, and order volume—our packaging team will follow up with a custom quote and lead time.

Contact Us Today

For immediate assistance, feel free to give us a direct call at (214) 444-8963. You can also send us a quick email at info@meridianpkg.com.