C-Flute Corrugated — Maximum Stacking Strength for Heavy Products and Industrial Shipping
4mm C-flute corrugated provides superior stacking strength and cushioning for heavy products, industrial shipping, and palletized distribution.
Why Choose C-Flute Corrugated
About C-Flute Corrugated
C-flute corrugated (approximately 4mm thick) is the workhorse of industrial and retail distribution shipping — its 39-flute-per-foot construction provides superior stacking strength compared to B-flute, making it the preferred specification for products over 20 lbs, for palletized warehouse distribution, and for products requiring maximum cushioning against impact during shipping.
The thicker profile of C-flute creates larger flute cells that provide more air cushioning than B or E-flute. This cushioning advantage makes C-flute preferred for fragile products, glass items, and electronics that require impact protection beyond what B-flute provides. The tradeoff is larger box dimensions and higher DIM weight compared to B-flute.
C-Flute for Palletized Distribution
Products shipped on pallets in retail distribution experience vertical stacking forces that can crush inadequately specified corrugated. C-flute at 44 ECT provides the stacking strength to handle pallet-height stacking (typically 6-8 boxes high) without panel crush. We calculate required ECT based on your product weight, box dimensions, and maximum pallet stack configuration.
C-Flute for Fragile and Glass Products
The larger flute cells of C-flute provide more air cushioning volume than thinner flutes — an advantage for fragile products where cushioning is the primary protection mechanism. Wine bottles, glass jars, ceramics, and electronics with glass components benefit from C-flute's superior impact absorption. Combined with custom interior dividers or foam inserts, C-flute provides a complete protection system for high-value fragile products.
Quick Specs
- Minimum Order
- 100 units
- Production Time
- 2-3 weeks
- Free Shipping
- Yes
- Eco-Friendly
- Yes
Thickness Options
Best For
Affordable sample kits available
C-Flute Corrugated is Best For
Available Box Styles
C-Flute Corrugated works great with these box styles.
Tuck End Boxes
The most widely used retail packaging style, available in straight and reverse tuck configurations with premium printing and finishing.
Magnetic Closure Boxes
Premium rigid boxes with concealed neodymium magnets that create a satisfying closure experience for luxury products and gifting.
Sleeve Boxes
A printed outer sleeve slides over an inner tray to create a distinctive, two-component unboxing experience for premium products.
Pillow Boxes
Curved pillow boxes with a distinctive oval cross-section for jewelry, small gifts, candies, and promotional packaging.
Gable Boxes
Distinctive roof-peak gable boxes with integrated carry handle for food service, bakery, retail gifting, and event giveaways.
Two-Piece Boxes
Separate lid and base construction creates the definitive premium unboxing experience for luxury retail, corporate gifting, and apparel packaging.
Explore Other Materials
Browse our other packaging materials.
Cardboard
EcoPremium paperboard for folding cartons, retail boxes, and custom packaging across every consumer category.
Corrugated
EcoFluted corrugated board in single, double, and triple-wall configurations for shipping, retail display, and e-commerce packaging.
Rigid Board
Dense greyboard that permanently maintains shape — the substrate for rigid boxes, set-up boxes, and luxury packaging that communicates quality through substance.
Kraft Paper
EcoNatural brown kraft paper and board communicates authenticity, sustainability, and artisan quality — the preferred material for natural, organic, and craft brands.
White Cardstock
Bright white clay-coated cardstock delivers pristine print quality for cosmetics, pharmaceuticals, and premium consumer goods packaging.
Specialty Paper
Pearlescent, metallic, embossed, linen, and other specialty papers create packaging that is visually and tactilely distinct from standard substrates.
Available Finishes
Enhance your c-flute corrugated packaging with premium finishes.
C-Flute Corrugated FAQs
When should I choose C-flute over B-flute?
Choose C-flute when your product weighs over 20 lbs, when the product is fragile and requires maximum cushioning, when distribution involves palletized stacking requiring high stacking strength, or when your box dimensions are large with long unsupported panels. For standard e-commerce under 20 lbs, B-flute is more cost-efficient.
What is the ECT rating for C-flute?
Standard C-flute is produced at 32 ECT and 44 ECT. 44 ECT is the standard for most C-flute applications requiring the stacking strength advantage of C-flute over B-flute.
Does C-flute print as well as B-flute?
C-flute prints comparably to B-flute for standard flexographic printing. The coarser flute spacing (39 vs 47 per foot) creates slightly more liner undulation, but the print quality difference for bold brand graphics is minimal.
Is double-wall corrugated the same as two layers of C-flute?
No. Double-wall corrugated combines two different flute types — typically B and C flutes — bonded between three liner sheets. This creates a structure with both flutes' advantages: B-flute's thinner profile and C-flute's stacking strength.
What is the minimum order for C-flute packaging?
C-flute corrugated boxes start at 50 units with digital printing.
Ready to Order C-Flute Corrugated Packaging?
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