Hercule Industrial logoHercule Industrial
Interactive 3D
1 / 3

FEFCO 0233.1

Envelope Bottom Box

  • 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.
Get pricing

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.

Free white-glove consultations. Blazing-fast response time. Fast quotes.

Product details

Top highlights

  • Tape-free interlocking base speeds up manual bench assembly
  • Requires shaped cutting, unlike standard straight-cut boxes
  • Best suited for single-wall board to prevent base flaps from binding

About this product

The envelope bottom box looks like a standard shipping carton from the top, but features four interlocking base flaps that fold together to create a secure, tape-free floor. Packers simply pop the tube open, fold the bottom flaps in a circular sequence, and tuck the final flap to lock the base.

This design trades the manufacturing simplicity of a standard slotted box for a faster, cleaner manual setup on the packing bench. While the base holds itself together through friction, the top flaps still require standard packing tape for final transit.

Common uses

  • Light ecommerce fulfillment
  • In-plant binning and work-in-progress transport
  • Retail-ready kitting
  • Subscription box staging

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.

Files or competing quote (optional)
Optional

More details

You can skip this whole part, or open a section and answer only what you know.

Size and quantity
Units
Materials and print
Add details for material or strength preference
Add details for print and artwork
Current box or specs
Add details for do you have a current box, spec, or target sample?

Manual fulfillment and in-plant handling

Light ecommerce fulfillment

For operations shipping apparel, soft goods, or lightweight kits, the envelope bottom eliminates the need to tape the underside of every box. Packers can build the base by hand, drop the product in, and seal only the top for transit.

In-plant binning and work-in-progress

When parts need to move between workstations or facilities without entering a rough courier network, the friction-locked base provides enough support for temporary transport. The clean underside also prevents tape from catching on conveyor rollers or shelving.

Retail-ready kitting

When assembling multi-item kits for retail distribution, the tape-free base speeds up the initial bench work. The interlocking flaps provide a flat enough floor for most bundled goods while keeping the outer presentation clean.

Subscription box staging

For subscription programs where presentation matters, the envelope bottom removes the tape seam from the underside of the box. This provides a cleaner look when the customer handles the package, even though the top remains taped for shipping.

Operations that benefit from tape-free bases

Manual packing lines

This box relies entirely on human hands to fold and tuck the base flaps. It fits well in operations where workers build boxes on demand at individual stations, rather than relying on automated case-erecting machinery.

Clean-presentation unboxing

Brands that want a cleaner exterior profile often prefer a tape-free base. The interlocking envelope leaves a smooth, folded appearance on the bottom, which can elevate the perceived quality of the package when handled by the end customer.

Temporary storage and staging

Facilities that stage empty boxes before final packing benefit from the quick pop-and-lock assembly. The boxes can be built and stacked empty without waiting for a taping machine, ready for immediate loading when the product arrives.

When to use a standard RSC or snap-lock base

Heavy payloads and automated lines

If you are shipping dense industrial parts or relying on automated case erectors, compare a standard Regular Slotted Container (FEFCO 0201). The envelope base can open under heavy drop impacts, and the complex tucking motion is difficult to automate.

Alternative manual assembly preferences

If packers find the four-flap circular tucking motion of the envelope base too slow or difficult, compare a Snap-Lock Bottom Box (FEFCO 0215). It uses interlocking hooks rather than a full overlapping envelope, offering a different manual assembly feel.

Close variants and lookalike dielines

The closest library neighbors include 0233.2, 0209, 0201. 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 thickness and base weight limits

Board thickness and folding friction

The four bottom flaps must overlap and slide past each other to lock. Standard single-wall board handles this easily. If you specify heavy double-wall board for extra protection, the flaps will bind and resist folding unless the cutting template is explicitly adjusted to create more clearance.

Production path and cutting method

Unlike a standard shipping box that can be cut with straight knives, the angled base flaps require shaped cutting. This means the box follows a different production path, making the envelope bottom more practical for repeat programs rather than one-off short runs.

Product weight and base blowout risk

Because the floor relies on friction rather than adhesive, mixed-carrier parcel shipping introduces a risk of the base unlocking upon impact. Review your product weight to confirm the envelope holds securely without an external seal.

Top closure method

While the base locks itself, the top flaps remain standard. Decide whether your packing line will use tape, strapping, or glue to secure the top for final transit.

Top flap and closure modifications

Top flap configurations

While the base remains an interlocking envelope, the top flaps can be adjusted. You can specify standard meeting flaps, or extend them into a full overlap for extra cross-bracing and security across the top opening.

Fold allowance tuning

If your product requires thicker corrugated board, the fold allowances on the base flaps can be widened. This prevents the thick material from binding when the four flaps overlap during the manual tucking sequence.

Base flap overlap adjustments

The geometry of the envelope flaps can be slightly modified to change how tightly they interlock. Tighter locks provide more security but require more hand force from the packer to complete the final tuck.

Board and packing details

Base drop testing for parcel networks

Because the floor relies on friction rather than adhesive, mixed-carrier parcel shipping introduces a risk of the base unlocking upon impact. If the box will travel through rough courier networks, test a loaded sample to confirm the envelope holds your specific product weight.

Top flap variants

0233.2 (Variant top flaps)

A variant that alters the top flap lengths or layout, often used to change how the top seals or to optimize how the flat blank fits on the manufacturing equipment.

Additional notes

Production route and run size

Because this style requires shaped cutting, very short runs follow a different production logic than standard boxes. It becomes much more practical when ordered in volumes that justify the specific cutting setup.

Related shipping boxes

0201: Regular Slotted Container

The standard shipping box. It requires tape on both the top and bottom, but follows a simpler production path and holds heavier weights securely.

0215: Snap-Lock Bottom Box

Another tape-free base option that uses interlocking hooks rather than a full overlapping envelope. It offers a different manual assembly feel and base profile.

0233.2: RSC Top - Tongue Lock Container

Close FEFCO sibling to review if a code suffix or older dieline may point to a variant. The broad shape can be similar while locks, slots, clearances, or fold sequence change the package.

FAQs

Assembly and packing

Can this box be set up by automated machinery?

No. The envelope bottom requires a specific multi-axis folding and tucking motion. It is designed for manual packing benches, not automated case erectors.

Closure and shipping

Do I need to tape the bottom of the box?

For light to medium weights in controlled transit, the friction lock holds the base closed without tape. However, if you are shipping heavy items through a parcel network, you may still need to tape the bottom to prevent it from opening when dropped.

Does the top close without tape?

No. The top features standard slotted flaps that require packing tape, glue, or strapping to stay closed during transit.

Board and material

Can I order this in heavy double-wall corrugated?

You can, but it requires careful template adjustments. The base flaps overlap in four layers. Thick board creates excessive friction during assembly unless the fold allowances are explicitly widened.

Cost and production

Does this follow the same production path as a standard shipping box?

Usually no. The angled cuts on the bottom flaps require shaped die-cutting, whereas standard boxes can be made with straight cuts. You trade a slightly different manufacturing route for faster manual assembly.

Product fit

Is the inside floor completely flat?

No. Because the four flaps overlap each other, the interior floor has slight ridges. If your product requires a perfectly flat surface to prevent tipping, you may need to add a flat corrugated pad inside.

Can I use this for heavy industrial parts?

It depends on the shipping route. For heavy parts moving through rough courier networks, the friction-locked base may open upon impact. A standard taped box or a fully glued base is usually a safer choice for dense, heavy items.

Assembly and packing

How does the base stay closed without tape?

The four bottom flaps are cut with specific angles that allow them to fold over one another in a circular sequence. The final flap tucks under the first one, creating a friction lock that holds the floor together.