Custom Corrugated Boxes
Custom corrugated boxes are shipping and retail boxes made from fluted paper board sandwiched between kraft linerboards, engineered to protect products at the lowest possible weight. Cubit manufactures made-to-size corrugated boxes in every style — RSC shipping boxes, die-cut retail packaging, E-flute and B-flute grades, and ECT-51 heavy-duty double-wall — starting at just 100 units with full-color printing and free design support.
Key Takeaways — Custom Corrugated Boxes
Types of Custom Corrugated Boxes
From RSC shipping boxes to retail displays, choose the corrugated style engineered for your product and supply chain.
Corrugated Flute & ECT Guide
Flute profile determines cushioning, stacking strength, and print quality. Match the flute to the job.
| Flute | Thickness | Typical ECT | Cushioning | Recommended Use |
|---|---|---|---|---|
| A-Flute | ~5.0 mm (3/16″) | Up to ECT-40 | Maximum | Fragile items, heavy industrial products |
| B-Flute | ~3.2 mm (1/8″) | ECT-32 to ECT-44 | Good | Mailer boxes, canned goods, displays |
| C-Flute | ~4.0 mm (5/32″) | ECT-32 to ECT-48 | High | Standard shipping boxes (most common) |
| E-Flute | ~1.6 mm (1/16″) | ECT-26 to ECT-32 | Moderate | Retail packaging, mailers, litho lamination |
| F-Flute | ~0.8 mm (1/32″) | ECT-23+ | Light | Premium retail, cosmetics, fast food clamshells |
| BC Double-Wall | ~7.1 mm | ECT-42 to ECT-51 | Maximum | Heavy freight, export shipping, palletized loads |
Not sure which board grade you need? Use our free ECT rating guide or read the E-flute vs B-flute comparison.
Corrugated vs. Other Box Types
See how corrugated compares to folding cartons and rigid boxes across the factors that matter.
| Feature | Corrugated Boxes | Folding Cartons | Rigid Boxes |
|---|---|---|---|
| Shipping Protection | Excellent — fluted cushioning | Minimal — needs outer box | Good but heavy |
| Per-Unit Cost | $0.45–$2.50 typical | Lower (thin board) | 5–15× higher |
| Strength-to-Weight | Best in class | Light duty only | Heavy for the strength |
| Print Quality | Good flexo; photo-real with litho-lam | Excellent offset | Excellent wrapped |
| Stacking Strength | ECT-rated, engineered | Poor | Moderate |
| Recyclability | 90%+ recovery, curbside | Curbside recyclable | Recyclable, material-heavy |
| Ships & Stores Flat | Yes | Yes | No — bulky |
| Custom Sizing Cost | Low — cutting die or dieless | Moderate tooling | High tooling |
| Best Use | Shipping, e-commerce, displays | Retail shelf products | Luxury presentation |
Need retail shelf packaging instead? See folding cartons — or for luxury presentation, rigid boxes.
Order Corrugated Boxes Online
Configure size, flute, and printing on any box below — instant specs, quotes in hours.
Corrugated Boxes for Every Industry
From DTC brands to industrial suppliers, our corrugated packaging is engineered for your product's journey.
Make Your Corrugated Boxes Unique
Full creative control — from print method and liners to inserts and coatings.
Flexo & Digital Printing
1-4 color flexographic printing for runs of any size, or photo-quality digital for short runs.
Litho Lamination
Offset-printed sheets laminated to corrugated for photo-real retail graphics.
Inside Printing
Full-color interior printing for unboxing moments that get shared.
Die-Cut Inserts & Dividers
Custom corrugated inserts that lock products in place — no foam needed.
Kraft, White & Black Liners
Natural kraft, bleached white, or full-coverage colored liners to match your brand.
Coatings & Varnishes
Moisture-resistant coatings, matte varnish, and scuff-resistant finishes.
Why Order Corrugated Boxes from Cubit?
A complete packaging platform — not just a box plant. Design, order, track, and protect.
How to Order Custom Corrugated Boxes
From design to delivery in 4 simple steps. Free shipping included on every order.
Submit Your Specs
Share dimensions and artwork, or use our AI Design Studio and ECT guide to dial in the build.
Approve Your Proof
Receive a high-fidelity 3D mockup within 15 minutes. Unlimited revisions at no cost.
Track Production
Follow your order through every production stage with real-time Cubit Flow tracking.
Receive & Ship
Boxes arrive flat-packed in 10-14 business days. Rush options available for 5-7 days.
Corrugated Boxes FAQ
Expert answers to the most common questions about corrugated board, ECT ratings, and ordering.
What are corrugated boxes made of?
Corrugated board is made of a wavy fluted paper medium glued between flat linerboard sheets — typically kraft paper from softwood pulp. Single-wall board has one fluted layer between two liners; double-wall and triple-wall add fluted layers for heavy-duty strength. This sandwich structure gives corrugated its exceptional strength-to-weight ratio.
What's the difference between corrugated and cardboard?
Cardboard is a generic term for any heavy paper-based board. Corrugated specifically means the fluted three-layer (or more) structure used for shipping boxes. Folding cartons (like cereal boxes) are made from solid paperboard, not corrugated — they're lighter but far less protective. If your box needs to survive shipping, you need corrugated.
What does ECT mean on a corrugated box?
ECT (Edge Crush Test) measures how much top-to-bottom compression a corrugated board can withstand before crushing, in pounds per linear inch. ECT-32 is the e-commerce standard (roughly equivalent to 200# burst strength), while ECT-44 to ECT-51 double-wall grades handle heavy or palletized freight. Use our free ECT guide tool to pick the right grade.
Which flute should I choose for my corrugated box?
E-flute (1/16″) for retail packaging and fine printing; B-flute (1/8″) for mailer boxes needing crush resistance; C-flute (5/32″) for standard shipping boxes; BC double-wall for heavy or fragile freight. Thinner flutes print better, thicker flutes cushion better.
What is the minimum order quantity for custom corrugated boxes?
Cubit offers custom printed corrugated boxes starting at just 100 units — well below the industry's typical 500-1,000 box minimums. This makes made-to-size custom boxes practical for small businesses, product launches, and test runs.
Can I order corrugated boxes in custom sizes?
Yes — every Cubit corrugated box is manufactured to your exact interior dimensions (length × width × depth). Right-sizing your box to the product typically cuts void fill by 40%+ and reduces dimensional-weight shipping charges.
What printing options are available for corrugated boxes?
We offer flexographic printing (1-4 spot colors, most economical at volume), digital printing (full-color CMYK, best under 5,000 units), and litho lamination (photo-quality offset graphics mounted to corrugated for premium retail). Inside printing, PMS color matching, and matte or gloss varnishes are available on all methods.
Are corrugated boxes recyclable and eco-friendly?
Yes — corrugated is the most recycled packaging material in North America, with recovery rates above 90%. Cubit boxes use high recycled-content board, water-based inks, and are 100% curbside recyclable. FSC-certified board is available for brands with chain-of-custody requirements.
Single-wall vs double-wall corrugated — which do I need?
Single-wall (one fluted layer, ECT-26 to ECT-44) handles products up to ~65 lbs and standard parcel shipping. Double-wall (ECT-42 to ECT-51) is for boxes over 65 lbs, stacked freight, export shipments, or fragile high-value items. Triple-wall approaches wood-crate strength for industrial use.
How fast can I get custom corrugated boxes delivered?
Standard production is 10-14 business days with free USA shipping. Rush production is available in 5-7 business days. Because corrugated ships flat, freight costs stay low even on bulk orders.
Ready to Create Your Custom Corrugated Boxes?
Get a free quote in minutes. Our packaging experts will help you choose the right flute, ECT grade, and print method for your product.
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