- Available in single-wall (32–44 ECT) and heavy-duty double-wall (48–51 ECT) constructions.
- Engineered with E-flute (1/16 in), B-flute (1/8 in), or C-flute (3/16 in) fluted mediums.
- Custom printed in CMYK process, bold spot Pantone colors, or crisp white ink on kraft.
- Ships flat from 250 units in 10–14 business days with zero die tooling charges.
Custom Corrugated Boxes
Custom corrugated boxes are fluted fiberboard containers engineered to protect, consolidate, and transport physical merchandise through parcel courier and freight networks. Available in single-wall and double-wall constructions from 32 ECT to 44 ECT across E, B, and C-flutes, they provide superior stacking strength. Order from 250 units in 10–14 business days with free US shipping.
What are custom corrugated boxes?
Custom corrugated boxes are structural packaging containers manufactured from combined paperboard consisting of one or more arched fluted paper mediums glued between flat interior and exterior kraft or mottled white paper liners. Unlike solid paperboard folding cartons that bend easily under load, the arched truss geometry of corrugated fluting provides immense vertical column compressive strength, cushioning impact resistance, and edge puncture durability during logistics handling. Custom corrugated packaging encompasses multiple functional configurations: self-locking roll-end mailers for direct-to-consumer unboxing, regular slotted containers (RSC) for master shipping cartons, and heavy-duty double-wall bins for industrial machinery parts. Corrugated cartons protect heavy merchandise from courier drops and rough transit sorting. Every order is precision manufactured to your exact inside dimensions with zero tooling charges, complimentary 2D vector CAD dielines, G7 master color process printing, and free ground shipping across the contiguous United States.
Which structural styles are in the custom corrugated boxes group?
Corrugated packaging formats differ based on whether your operation prioritizes high-speed tape sealing, self-locking e-commerce presentation, or heavy pallet stacking strength. Our custom corrugated boxes group includes six core structural configurations
Corrugated box facts
- Box families
- Shipping cartons (RSC, FOL), mailer boxes (FEFCO 0427), double-wall boxes, and moving boxes
- Best for
- E-commerce parcels, master freight cases, bulk wholesale distribution, and heavy industrial items
- Flute grades
- E-Flute (1.6 mm), B-Flute (3.2 mm), C-Flute (4.0 mm), and BC-Flute double wall (7.0 mm)
- Inserts
- Optional corrugated dividers, custom die-cut cradles, or protective bubble wraps
- Minimum
- From 100 units for mailers; 250 units for RSC shipping cartons
- Turnaround
- 10–14 business days standard (4–5 business day rush available)
- Board ratings
- 32 ECT, 40 ECT, 44 ECT (single wall) up to 48 ECT and 51 ECT (double wall)
- Arrives
- Flat packed bundled on pallets, strapped and wrapped for rapid receiving
- Size range
- Any custom inside dimensions from 3 × 3 × 2 in up to 36 × 24 × 24 in
Custom corrugated boxes vs shipping boxes vs double-wall boxes
| Corrugated | Shipping | Double wall | |
|---|---|---|---|
| Structural fluting format | Single-wall or double-wall fluting in E, B, C, or BC profiles | Standard single-wall C-flute (3/16 in) or B-flute (1/8 in) | Heavy-duty double-wall combining B-flute and C-flute together |
| Edge crush test (ECT) rating | Configurable from 32 ECT up to 51 ECT depending on box style | Standard 32 ECT single-wall (up to 40 lbs gross weight) | Heavyweight 48 ECT to 51 ECT double-wall (up to 100 lbs) |
| Primary logistical application | E-commerce mailers, retail master packs, and shipping cartons | Standard master shipping cartons and wholesale freight distribution | Heavy industrial hardware, automotive parts, and bulk machinery |
| Closure & sealing mechanism | Self-locking roll-end tabs, tape-sealed RSC flaps, or auto-bottom | Center-meeting flaps sealed with standard 2-inch packaging tape | Heavy-duty overlap flaps sealed with 3-inch reinforced paper tape |
| Pallet stacking crush resistance | Moderate to extreme column strength based on selected flute arch | Reliable vertical column stacking up to 4 pallet tiers high | Extreme warehouse compressive strength supporting heavy multi-tier pallets |
Save this comparison
The styles on one sheet. Pin it, or share it with whoever packs your boxes.
Still deciding between styles?
Request a Quote →Are custom corrugated boxes right for my brand?
- You need durable shipping containers to protect products during parcel carrier handling and freight shipping
- You package goods exceeding two pounds that require high crush resistance and puncture protection
- You want to ship subscription boxes or direct-to-consumer e-commerce orders in branded packaging
- You require certified Box Maker's Certificate stamps complying with National Motor Freight classifications
- You seek cost-effective bulk shipping cartons starting from 250 units with zero die tooling charges
- Lightweight retail folding paperboard cartons for cosmetics, teas, and retail shelves: Folding cartons
- Miniature cartons engineered specifically for compact goods measuring under 5 inches: Small boxes
- Heirloom rigid setup gift boxes crafted from non-bending binderboard cores: Rigid boxes
- Organic unbleached kraft paperboard packaging for rustic artisanal shelf goods: Kraft boxes
What products are packaged in custom corrugated boxes?
Custom corrugated boxes protect and transport merchandise across commercial supply chains and e-commerce fulfillment channels
What materials are used for custom corrugated boxes?
Choose from five paperboard and corrugated fiberboard substrates matched to your product weight and transit requirements
Which finishes elevate custom corrugated packaging?
Corrugated box specifications
| Spec | Options |
|---|---|
| Supported box styles | Regular slotted containers (RSC), full overlap (FOL), roll-end tuck-front (RETF), and auto-lock bottom |
| Printing technologies | Direct flexographic printing, commercial digital printing, and high-definition litho-lamination |
| Color calibration | G7 Master Color calibrated CMYK process and exact PMS Pantone spot color formulas |
| Minimum line weight | 1.0 pt for positive flexographic lines; 1.5 pt for reversed-out knockouts on corrugated liner |
| Artwork safe margin | Minimum 6.35 mm (0.25 in) clearance from all cut edges, scorelines, and slot corners |
| Bleed allowance | 3.175 mm (0.125 in) external bleed beyond trim lines on all full-coverage graphic panels |
Ready to quote corrugated boxes? Compare up to 3 quantities with a free 3D mockup.
Request a Quote →Corrugated box design ideas
Example designs with made-up brands. Your box is made to your design.
Common corrugated packaging mistakes (and how we prevent them)
Our packaging specialists review every corrugated box dieline and artwork file before production. We prevent these four critical errors
- Under-specifying ECT ratings on heavy warehouse master cartons, causing lower pallet cartons to buckle and crush in transit.
- Selecting coarse C-flute board for intricate multi-color retail graphics, resulting in visible fluting ridges and washboarding defects.
- Measuring outside dimensions instead of inside clearances, which results in tight, difficult product loading at fulfillment benches.
- Placing barcodes across curved flap creases, preventing warehouse barcode scanners from reading tracking numbers reliably.
Chat with a designer now
Share your logo, a sketch or an AI image. We'll rebuild every element cleanly onto your box dieline and send a 3D mockup, free.
Made your design with AI?
Generated a concept in Google Gemini, ChatGPT, Claude or Midjourney? Send us your AI image: we rebuild every element onto your box dieline and show you a 3D mockup before you pay, free.Custom vs stock corrugated boxes: which is better?
| Stock (plain) boxes | Custom boxes from CubitPack | |
|---|---|---|
| Branding | Plain, or a label on the front | Your logo and colors, inside and out |
| Fit | Fixed sizes | Made to your exact size |
| Minimum | Any quantity | From 100 units for mailers; 250 units for RSC shipping cartons |
| Lead time | Ships right away | 10–14 business days, rush 4–5 |
| Design | None | Free design help, proof and 3D mockup |
Get custom corrugated boxes made to your exact size, with a free 3D mockup before you pay.
Request a Quote →Are corrugated boxes eco-friendly?
Kraft and recycled board
Choose kraft or recycled board for a lower-impact box.FSC paper available
FSC paper and ISO 9001 production are available on request.Food-safe on request
For food, we make it in a certified partner facility. Certificates and lab tests on request.How do I order custom corrugated boxes?
Tell us what you need
Size, quantities or AI conceptCompare volume pricing
Dedicated account managerApprove your proof
Digital proof + 3D mockupMade and shipped
Free to all 50 statesHow much do custom corrugated boxes cost?
The price depends on four things, and every custom quote is free.
Size
Bigger packaging uses more materialQuantity
The unit price drops as you order moreMaterial
The board, film or paper you chooseFinishes
Foil, windows and lamination add costYour first order is 10% off, and we beat written quotes from US competitors for the same specs.
10% off your first order.
Request a Quote →What do I need to send for a quote?
- The product and how many you need
- The inside size, or what goes in it
- A style, or ask us to suggest one
- Your logo or artwork (an AI image is fine)
- Pantone codes, if you have them
- Delivery ZIP code and the date you need it
Can I see a sample first?
Sample kit
Board and finish swatches, sample boxes, labels and bags. Credited to your first order.Digital proof + 3D mockup
See it before you payPrinted sample
Of your own designHow do the boxes ship?
- Free shipping to all 50 states
- Worldwide with DDP prices: duties and taxes included
- Blind and split shipping
- Damaged in transit? We reprint the damaged units free
Why brands choose CubitPack
Dedicated specialist
One account manager from quote to deliveryPantone guaranteed
Clearly off? We reprintReprint or refund
If we get it wrong, you chooseBBB accredited
A US business you can checkCorrugated box questions
What is the difference between E-flute, B-flute, and C-flute corrugated boxes?
E-flute measures 1/16 inch thick with 90 flutes per foot, offering a smooth surface for retail printing. B-flute measures 1/8 inch thick, balancing crush resistance and puncture protection. C-flute measures 3/16 inch thick, delivering maximum vertical stacking strength for shipping cartons.
What does a 32 ECT rating mean on corrugated boxes?
Edge Crush Test (ECT) measures the vertical compressive strength of corrugated board. A 32 ECT rating indicates the board withstands 32 pounds of pressure per linear inch on edge, supporting up to 40 pounds of total package weight under standard shipping conditions.
Can custom corrugated boxes be printed inside and out?
Yes. We offer double-sided printing across our custom corrugated mailer boxes and shipping cartons, allowing you to print full CMYK branding on the exterior and welcome messages, instructions, or vibrant flood colors on the interior.
What is the minimum order quantity for custom printed corrugated boxes?
Our minimum order quantity for custom printed corrugated mailer boxes starts from 100 units, while custom RSC shipping cartons start from 250 units. Volume discounts apply at 500, 1,000, 2,500, and 5,000 units.
Do custom corrugated boxes include free dielines and 3D proofs?
Yes. Every custom corrugated box order includes a complimentary 2D vector CAD dieline template generated to your exact dimensions, along with an interactive 3D digital proof that simulates panel folding, ink coverage, and flute orientation before payment.
How do I accurately measure inside dimensions for corrugated packaging?
Always measure Length (longest open dimension), Width (shorter open dimension), and Depth (vertical height from bottom to top opening). Because corrugated board is 1/8 to 3/16 inches thick, specifying inside dimensions guarantees your product fits perfectly.
Are custom corrugated boxes curbside recyclable?
Yes. Our corrugated packaging is manufactured from natural paperboard fibers and water-based inks, making all unlaminated boxes 100% curbside recyclable in standard municipal paper recycling programs across the country.
What is a Box Maker's Certificate (BMC) stamp?
A Box Maker's Certificate is an official circular stamp printed on the bottom flap of shipping boxes certifying that the container complies with National Motor Freight Classification (NMFC) Item 222 and Rule 41 freight requirements.
How fast is production and delivery for custom corrugated boxes?
Standard production takes 10 to 14 business days following artwork proof approval. We also offer an expedited 4 to 5 business day rush converting schedule for urgent inventory restocking and product launch deadlines.
Are there any tooling or die fees for custom sizes?
No. We manufacture custom corrugated boxes to your exact custom dimensions with zero die cutting charges or setup fees. All digital proofs and ground shipping across the contiguous United States are included with your quote.
Still have a question? Ask a packaging specialist.
Request a Quote →Corrugated boxes terms
- Edge Crush Test (ECT)
- A standardized laboratory test measuring the vertical compressive strength of corrugated board along its fluted edge.
- Fluted Medium
- The wave-shaped arched paper sheet glued between flat linerboards that provides cushioning and architectural column strength.
- Linerboard
- The flat paper sheets adhering to the outside and inside faces of the corrugated medium, creating combined fiberboard.
- Regular Slotted Container (RSC)
- The most common shipping box style (FEFCO 0201) where all outer flaps have identical lengths and meet at the center.
- Roll-End Tuck-Front (RETF)
- A self-locking mailer box style (FEFCO 0427) featuring roll-end locking sidewalls and a front lid that tucks into the base.
- Box Maker's Certificate (BMC)
- An official circular insignia printed on shipping cartons certifying structural board ratings and carrier freight weight limits.
Other box styles
Learn more about corrugated boxes
Get your corrugated boxes price
One dedicated account manager prepares pricing across up to 3 quantities.
- Free design & AI-to-print studio + 3D mockup
- No die or plate charges · 4–5 day rush available
- Free shipping to all 50 states
- 10% off your first order
- Reprint or refund if we get it wrong
Corrugated board grades (32–44 ECT, single/double-wall), flute profiles (E/B/C), and Box Maker Certificate specifications were verified against TAPPI T 811 and FEFCO International Fibreboard Case Code standards. Parameters confirmed with converting partner engineers. Tell us if something looks wrong.
Sources
- FEFCO International Fibreboard Case Code standards for RSC 0201 and RETF 0427 corrugated constructions
- TAPPI T 811 Edge Crush Test (ECT) ratings and compressive strength testing standards for corrugated fiberboard
- Idealliance G7 Master Color specifications for flexographic and digital printing on corrugated linerboard
What changed
- November 11, 2026: Published comprehensive custom corrugated boxes style page covering E/B/C flute profiles, RSC and mailer constructions, 10 CAD SVGs, and 3 companion engineering guides.