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FEFCO 0206

Center Special Full Overlap 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.
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Product details

Top highlights

  • Inner flaps close without a gap for a flat interior
  • Outer flaps fully overlap to create a double-thick top and bottom barrier
  • Built for dense industrial parts, heavy appliances, and export transit

About this product

The Center Special Full Overlap (SFF) is engineered for extreme transit conditions. It combines two distinct structural advantages: inner flaps that close without a gap to create a flat, snag-free floor, and outer flaps that fully overlap to form a double-thick exterior barrier.

Because this configuration consumes significantly more corrugated board and requires a stepped cutting profile, it is typically reserved for heavy industrial parts, export shipping, and dense payloads where simpler boxes risk bottom failure or puncture.

Common uses

  • Heavy and dense industrial parts
  • Export and extended transit
  • High-security shipments
  • Hazardous or sensitive material transport

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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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Heavy-duty transit and export applications

Heavy and dense industrial parts

The flat inner floor prevents metal components from snagging or wedging into gaps, while the double-thick outer layer absorbs forklift impacts and rough handling.

Export and extended transit

When shipments face unpredictable handling across multiple transfer points, the fully overlapping top and bottom flaps provide a reinforced shield against punctures and crushing.

High-security shipments

The complete overlap of the outer flaps eliminates the central seam. When secured with heavy-duty tape or metal stitching, the box becomes highly resistant to tampering.

Hazardous or sensitive material transport

For goods that cannot risk exposure or bottom dropout, the double-thick exterior and gapless interior provide an extra margin of safety during rough transit.

Industries relying on the flat-floor overlap

Industrial manufacturing

Teams shipping machined parts or heavy assemblies rely on the flat floor to distribute weight evenly, preventing the localized stress that causes simpler boxes to fail.

Appliance and equipment distribution

Large, heavy units demand a rigid base that resists buckling when lifted. The double-layer floor provides a stable foundation for extreme payloads.

Automotive and aerospace components

Dense metal parts require a snag-free base so they do not wedge into seams during transit and tear the bottom panel.

When to consider a different heavy-duty box

If the flat interior floor is not strictly necessary

Evaluate the Full Overlap Box (FEFCO 0203). It provides the same double-thick exterior barrier but uses a simpler rectangular blank, which can simplify production routing if a floor gap is acceptable.

If top and bottom puncture risk is lower

Consider the Center Special Box (FEFCO 0204). It maintains the flat interior floor, but the outer flaps only have to meet in the center, significantly reducing the amount of corrugated board required.

If a rectangular blank profile is preferred

Look at the Center Special Overlap (FEFCO 0205). The outer flaps only partially overlap, allowing the box to be cut without the stepped profile that requires specialized shaped cutting.

Close variants and lookalike dielines

The closest library neighbors include 0204, 0203b, 0205b. 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, sealing, and production choices

Board grade and fold clearances

This box is frequently produced in heavy double-wall or triple-wall board. Thick board requires precise slot tuning to ensure the massive overlapping flaps fold squarely without binding or tearing the hinges.

Base sealing method

The thick, fully overlapping outer flaps have strong spring-back memory. Decide whether the packing line will use heavy-duty tape, adhesive, or metal stitching to secure the base before loading.

Production routing and profile shape

Because the inner and outer flaps are different lengths, the flat blank has a stepped profile. This requires shaped cutting rather than straight slotting, making it better suited for established repeat programs rather than quick prototypes.

Packing station ergonomics

Folding and sealing the massive double-thick flaps requires more physical effort than a simpler box. Packing stations may require fixtures to hold the flaps square while the seal is applied.

Structural tuning for thick board

Slot and clearance tuning

For heavy-duty board grades, the slots between the flaps can be widened and offset to prevent the triple-thick corners from binding during assembly.

Manufacturer joint placement

The side glue flap can be attached to either the length or width panel to better align with specific factory folding equipment.

Joint closure method

For extreme export weights, the manufacturer joint can be specified as stitched rather than glued to prevent shear failure under high load.

Board and packing details

Pallet density for flat delivery

The extended flaps make the unassembled boxes thicker and wider than standard shipping cartons, which reduces the number of empty boxes that fit on an inbound pallet.

Heavy-board variants

Heavy-board slot tuning

A structural adjustment that widens the flap slots and adjusts crease offsets, mandatory when using thick double-wall or triple-wall board to ensure the box folds cleanly.

Additional notes

Base sealing for heavy payloads

For export or extreme-weight applications, the base overlap is frequently secured with metal stitching rather than tape to prevent shear failure when the box is lifted.

Related heavy-duty packaging

0203: Full Overlap Box

Evaluate this option if the double-thick exterior is required but a gap in the interior floor is acceptable.

0204: Center Special Box

Consider this if the flat interior floor is critical, but the outer flaps only have to meet rather than fully overlap.

0205: Center Special Overlap

Look at this alternative if a flat floor and partial overlap provide enough protection, allowing for a simpler straight-cut production route.

0203b: Full Overlap Container (FOL)

Nearby FEFCO style to review if the buyer wants a similar job but the closure, flap overlap, wall build, or part count changes the package choice.

FAQs

Packing and assembly

Can this box be run on standard mechanized erecting equipment?

Usually not without specialized equipment. The combination of inner flaps that close without a gap and outer flaps that fully overlap can cause standard folding arms to jam. It is typically erected manually or with heavy-duty, purpose-built machinery.

Production profile

Why does this box require shaped cutting?

The inner flaps are shorter than the outer flaps, creating a stepped shape when the box is laid flat. Standard straight-knife slotters cannot cut this uneven profile, so a shaped cutting process is required.

Closure and sealing

Does the full overlap mean the box can ship without tape?

No. The overlapping flaps provide a thick physical barrier, but they do not lock together. The top and bottom must still be secured with heavy-duty tape, glue, or metal stitching.

Board and material

What board grades work best for this style?

Because it is engineered for extreme protection, it is most commonly specified in heavy single-wall or double-wall corrugated board. If double-wall is used, the factory must adjust the fold allowances so the thick flaps do not bind.

Product fit

How does the flat floor help with heavy parts?

In a simpler box, the inner flaps leave a gap down the center. Heavy metal parts can wedge into this gap, causing the bottom to sag or tear. The flat floor distributes the weight evenly across the entire base.

Comparison

Does this box use more material than a standard shipping carton?

Yes. It consumes significantly more corrugated board to create the full overlaps, and the stepped shape requires a specialized production route. It should be specified when the payload's weight or value justifies the extra protection.

Closure and sealing

Should the bottom be taped or stitched?

For export or extreme-weight applications, the base overlap is frequently secured with metal stitching rather than tape to prevent shear failure when the box is lifted. Tape is sufficient for lighter, bulky items.

Storage and logistics

Do these boxes take up more space on an inbound pallet?

Yes. The extended outer flaps make the unassembled boxes wider and thicker than simpler cartons. This reduces the number of empty boxes that fit on a single pallet, which affects inbound freight planning.