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ECMA X25

Full-Cover Counterflap Closure for Folding Cartons

  • Available in a wide range of custom configurations & material selection.
  • Order 1 sample. Or order 100K+ units. Or anything in between.
  • Affordable delivery across North America.
  • Design support, warehousing, testing, assembly available.
  • Widest machinery capability in America via 30+ specialist partner plants.
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Product details

Top highlights

  • Full-width inner flap protects product from the tuck tab
  • Hides dust flaps for a clean, premium unboxing experience
  • Provides a dedicated surface for interior printing or instructions

About this product

ECMA X25 specifies a tuck-in flap used with a full-covering counterflap. It is a Group X feature used with a folding-carton design. The illustrated carton shows the counterflap beneath the main tuck closure.

The added panel can create a cleaner opening and separate the main tuck flap from the contents.

Common uses

  • Premium cosmetics
  • Pharmaceuticals requiring printed instructions
  • Granular products needing sift resistance
  • High-end electronics and accessories

Get a quote

Share what you know. We'll take it from there. Or email us at info@herculeindustrial.com

Best Price Guarantee

Already have a packaging quote? Let us beat it.

Send us the quote you have. We will beat it for the same specifications, quantity, and delivery requirements.

Upload a competing quote

Free quote review. No obligation.

30+specialist partner plants

We supply through the plant best suited to your price, material, production, and delivery requirements.

Why we can beat a lower quote

30+ plants give us more ways to lower the price.

Each plant has different machinery, material costs, order minimums, and freight rates. Our buying volume helps us secure better pricing. We then quote through the plant that gives you the lowest total price for your requirements.

Send us your current quote. Watch us beat it.

Attach it to the quote form or email it to us. We'll review it free and send you our price.

Upload a competing quoteinfo@herculeindustrial.com
Best Price Guarantee terms

To qualify, send a written supplier quote dated within the past 30 days and addressed to your company. It must cover the same dimensions, construction, material, print, finish, quantity, tooling, freight, delivery date, and delivery location. The guarantee does not cover taxes, expired quotes, liquidation or clearance sales, or obvious pricing errors.

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Premium Retail and Protective Packing

Premium unboxing presentation

The counter flap hides the folded side dust flaps, presenting the customer with a clean, unbroken surface when they open the main lid. This is useful for high-end retail goods where the first impression is critical.

Protecting products from the tuck tab

In standard cartons, the friction tab slides directly into the box cavity, which can scratch labels, catch on bottle caps, or damage delicate items. The counter flap acts as a physical barrier, keeping the tab completely separated from the payload.

Improved sift resistance

By covering the gaps typically left between short dust flaps, the counter flap reduces the chance of granular products or small components slipping out of the top or bottom of the carton.

Increasing top crush resistance

The full-width counter flap adds a structural layer directly beneath the main closure, providing better resistance against top-down pressure during stacking or handling.

Industry and Product Fit

Cosmetics and personal care

Provides the rigid, high-quality feel expected in beauty packaging, while offering a prime location on the inner flap for branding, welcome messages, or usage steps.

Pharmaceuticals and nutraceuticals

The counter flap serves as an immediate, highly visible surface for mandatory dosage instructions or regulatory warnings as soon as the patient opens the box.

High-end electronics and accessories

Offers a clean interior presentation for cables, chargers, or small devices, keeping the tuck tab away from sensitive screens or finishes.

When to Consider Standard Tuck Cartons

High-speed automated cartoning

If the packing line relies on standard automated cartoners, a standard straight tuck or reverse tuck may be necessary. The X25 requires a distinct folding sequence (dust flaps, then counter flap, then main tuck) which standard equipment may not support without modification.

Strict material efficiency

The full-coverage counter flaps extend the overall length of the flat blank, reducing how many cartons fit on a single sheet of board. If minimizing board footprint is the primary driver, a standard tuck carton uses less material.

Board, Print, and Assembly Choices

Interior print requirements

Decide if the counter flap will carry graphics or instructions. Because this flap is formed from the main body panel, printing on its visible face requires double-sided printing or specific board choices.

Board thickness and fold clearance

The main tuck flap must fold cleanly over the counter flap. Thicker boards require careful adjustment of the crease offsets to prevent the outer flap from bulging or binding when closed.

Hand assembly versus automated packing

The counter flap requires a specific folding sequence. Evaluate whether your packing line can handle the extra step or if manual assembly is a better fit.

Base closure style

Decide if the counter flap is needed on both ends. Using a standard tuck or lock-bottom on the base can simplify packing while keeping the premium presentation on the top opening.

Adjusting the Counter Flap and Thumb Hole

Thumb hole sizing

The semi-circular cutout on the edge of the counter flap allows users to easily grip and lift it. This cutout can be widened or deepened based on the ergonomics of the target customer.

Mixed end closures

While the template models the counter flap on both ends, it is common to use the premium X25 closure on the top for unboxing, while using a standard tuck or lock-bottom on the base to reduce board footprint and speed up assembly.

Counter flap length

The counter flap can be adjusted to cover the entire opening or shortened slightly depending on the required friction and clearance with the front wall.

Board and packing details

Hand assembly workflow

For manual packing operations, the X25 is straightforward but adds one extra folding step per end compared to a standard tuck box. Packers must fold the dust flaps, fold down the counter flap, and finally secure the main tuck.

Additional notes

Board thickness and lid clearance

When specifying thicker boards, the crease lines must be stepped carefully so the outer tuck flap does not bulge when folded over the inner counter flap.

Related Retail Cartons

A20.20: Standard Straight Tuck Carton

Review this alternative if you need a simpler, more material-efficient closure that works easily on standard automated packing lines.

X31: Counter Flap with Tuck Tab

Review this alternative if the inner counter flap needs its own friction tab to lock into the carton body for added security.

FAQs

Assembly and Packing

Can this carton be packed on automated lines?

It depends on the equipment. The counter flap requires a specific folding sequence before the main lid is closed. Standard cartoners may struggle with this extra step, making this style more common for hand-packing or specialized machinery.

Product Fit

Does the counter flap make the box sift-proof?

It improves sift resistance by covering the gaps left by standard dust flaps, making it better for powders or small parts. However, it is not hermetically sealed, and fine powders may still require an inner pouch.

Print and Finish

Can we print on the inside of the counter flap?

The counter flap is an excellent billboard for instructions or branding. Because it folds inward from the main panel, printing on it usually requires double-sided printing on the flat sheet.

Materials

Is this closure suitable for corrugated board?

It is generally best suited for folding boxboard (FBB) or solid bleached board (SBB). Using micro-flute corrugated can create excessive bulk at the hinge points, as the main flap must fold over the already thick counter flap.

Design Options

Do we have to use the counter flap on both the top and bottom?

You can specify the counter flap for the top opening (where the customer interacts with it) and use a standard tuck or lock-bottom for the base to reduce board footprint and assembly time.

What is the purpose of the thumb hole cutout?

The cutout provides a grip point so the user can easily lift the counter flap after opening the main lid. Without it, the tight fit of the counter flap can make the box difficult to open.

Product Fit

Does the counter flap prevent the box from bowing?

It adds rigidity across the opening, which helps prevent the top face from bowing inward under moderate pressure, though it does not replace the need for proper board grade selection.

Assembly and Packing

How does the counter flap affect hand packing?

It adds one extra folding step per end. Packers must fold the dust flaps, fold down the counter flap, and then secure the main tuck, which slightly increases assembly time per unit.