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FEFCO 0721

Auto-Bottom Retail Carry Box with Interlocking Top

  • 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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30+specialist partner plants

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Why we can beat a lower quote

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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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Product details

Top highlights

  • Base deploys instantly, eliminating bottom taping and speeding up the pack bench
  • Fully overlapping top flaps use a mechanical tongue lock for a secure, tape-free closure
  • Integrated cutouts support plastic handles for retail carry-out

About this product

This single-piece carton combines an instant-setup crash-lock base with a secure, tape-free carrying top. When a packing team squares the flat board, the floor locks into place automatically. The fully overlapping top flaps then fold and fasten using a mechanical double-tongue lock, creating a rigid, enclosed container with integrated handle cutouts.

Because it eliminates pack-bench taping while providing a clean presentation, buyers often choose it for heavy retail goods, premium takeaway kits, and high-volume fulfillment where the customer needs to carry the product away comfortably.

Common uses

  • Heavy retail takeaway
  • Promotional kits
  • Appliance or electronics carry-out
  • Beverage multi-packs

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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Retail carry-out and fast-packing jobs

Heavy retail takeaway and electronics

The dual-layered crash-lock floor supports dense products, while the fully overlapping top flaps distribute the lifting tension. This makes it highly effective for small appliances, heavy electronics, or premium homeware that customers carry directly from the store.

Promotional kits and event giveaways

For marketing campaigns, the tape-free top closure provides a clean, professional presentation. Attendees can easily carry the branded box using the integrated handle, and the mechanical lock keeps the contents secure without looking like a shipping carton.

Hardware and home goods

Dense products like tool sets or hardware kits benefit from the reinforced bottom. The mechanical top lock ensures the box stays closed during transit from the store to the car, providing a reliable carry experience.

Premium beverage and multi-pack carry-out

For craft beer kits or wine selections, the integrated handle cutouts allow customers to carry multiple heavy bottles securely. The overlapping top flaps add puncture resistance and keep the bottles fully enclosed.

Retail and fulfillment environments

High-volume fulfillment centers

When packing teams assemble hundreds of retail-ready kits per shift, the auto-bottom base removes the labor of folding and taping bottom flaps. The mechanical top lock finishes the package quickly, keeping the line moving.

Brick-and-mortar retail floors

Store employees can pop these boxes open at the checkout counter in seconds. The tape-free closure means no tape dispensers are needed on the sales floor, keeping the checkout area clean and efficient.

Event and exhibition distribution

When handing out heavy materials or sample kits at trade shows, the integrated handle makes it easy for attendees to carry the box around the venue. The instant setup allows staff to build boxes on demand as traffic fluctuates.

When to compare other box styles

Parcel and courier shipping

The mechanical tongue locks are designed for retail carry, not the rough handling of a mixed courier network. If the box will be shipped individually through the mail, compare it to a standard crash-lock box with taped top flaps (FEFCO 0710) or plan to use an outer shipping bag.

Short digital trial versus repeat run

The complex base and locking tabs require specific factory folder-gluer equipment to achieve their true pop-open resistance. For very low-volume prototyping, a manual snap-lock base may be easier to test before committing to a repeat production program.

Close variants and lookalike dielines

The closest library neighbors include 0219, EVC11260, EVC11261. Use this as a variant check if a buyer brings an old code, sample, or dieline that looks close. The deciding details are usually the lock, slot, closure, wall build, part count, or fold sequence.

Board, fit, and packing choices

Board thickness and locking friction

The tongue locks and crash-lock base rely on precise clearances. Fine to medium flutes fold crisply and lock securely. Heavy double-wall boards can make the base bind during assembly and make the top flaps too stiff to lock smoothly.

Handle selection

The cutouts on the top flaps must be sized to match the exact plastic handle you intend to use. Confirming the handle dimensions early ensures the die-cut holes align perfectly when the flaps overlap.

Print surface and graphic alignment

Because the top flaps fully overlap, the outer flap completely covers the inner one. If your artwork includes continuous graphics across the top, the design must account for this overlap to ensure the final presentation looks correct.

Packing line workflow

This box is loaded from the top after the base is squared. Ensure your packing team has the right setup to drop heavy items into the open top before folding and locking the overlapping flaps.

Handle and locking adjustments

Locking tab proportions

The width and depth of the top tuck tongues can be adjusted based on the board grade and the required closure strength, ensuring the lock holds the payload without tearing.

Handle cutout shapes

The apertures can be modified to fit specific plastic handle hardware, or reshaped into simple oval cutouts if the box will be carried directly using finger grips.

Base reinforcement

The overlap of the crash-lock bottom panels can be adjusted to provide more surface area for the glue joint, adding security for particularly dense payloads.

Board and packing details

Flat delivery and storage

The factory glues the side seam and the complex bottom folds, delivering the boxes as flat, collapsed tubes. This keeps warehouse footprint low until the moment of packing.

Alternative top closures

Standard FOL Crash-Lock (FEFCO 0710)

A similar auto-bottom structure with fully overlapping top flaps, but without the mechanical tongue locks or handle cutouts. Used when the top will simply be taped for shipping.

Additional notes

Short digital trial versus repeat run

While a few samples can be cut digitally to test the handle strength and product fit, the true pop-open resistance of the base can only be felt once it runs through a factory folder-gluer. This makes it a structure best suited for mature, repeat programs.

Related packaging choices

0700: Open-Top Crash-Lock Tray

Compare this when you need the fast-assembling base but do not need top flaps, often used with a separate lid or as an inner tray.

EVC11260: Plastic Holder - Snap Lock

EngView neighbor that can look close in CAD. Review it if a sample or dieline seems similar, then verify closure style, slots, wall build, and assembly before treating it as a substitute.

FAQs

Shipping and Route

Can I use this box for ecommerce parcel shipping?

It is not recommended as a standalone parcel shipper. The mechanical top locks are secure for carrying but can pop open if dropped or crushed in a courier network. For parcel transit, it usually requires an outer shipping bag or a switch to a taped-top design.

Board and Fit

Can this be made in heavy double-wall corrugated?

It is generally avoided. Heavy board makes the crash-lock base difficult to pop open and stiffens the top flaps, preventing the tongue locks from seating properly. Fine or medium flutes provide the best balance of strength and folding precision.

Inserts and Handles

Do the handle holes come with the plastic handle?

No, the box is manufactured with the precise cutouts needed, but the plastic handles are sourced and inserted separately. We match the hole dimensions to your specific handle hardware.

Closure and Assembly

Does the crash-lock base require any tape?

No, the base interlocks mechanically when the flat box is squared. The factory pre-glues the diagonal folds, so the floor drops into place and holds the payload without pack-bench taping.

Print and Graphics

How does the overlapping top affect printed graphics?

The outer top flap completely covers the inner top flap when closed. If you want a continuous design across the top of the box, the artwork must be placed entirely on that single outer flap.

Inserts and Handles

Can the handle cutouts be used without a plastic insert?

Yes, the cutouts can be sized as direct finger holes. However, the board tear strength must be tested against the weight of your product to ensure the cardboard does not rip when carried.

Storage and Delivery

Can this box be shipped flat to our stores?

Yes. The factory glues the side seam and the complex base folds, delivering the boxes as flat tubes. They take up minimal space in a stockroom until they are popped open for use.

Closure and Assembly

How does the top lock stay closed without tape?

The outer top flaps feature a double-tongue mechanical lock. Once the flaps are folded over, the tuck tongues slide into receiving slots, creating a friction fit that holds the top secure during carry.