FEFCO 0201

Regular Slotted Container (RSC)

The Regular Slotted Container (RSC), or FEFCO 0201, is the standard corrugated shipping box used across a wide range of distribution networks. Built with four top and four bottom flaps, the outer flaps close flush at the center for sealing with tape, glue, or stitching.

Because the flat blank is a simple rectangle, it converts smoothly during manufacturing. This makes it a practical choice for enclosing a product on all six sides, serving as the foundation for master shippers, ecommerce outers, and palletized distribution.

At a glance

  • Outer flaps close flush at the center for standard tape or glue sealing
  • Material-conscious rectangular blank keeps board usage predictable
  • Top flaps provide lateral support for top-to-bottom crush resistance

Common uses

  • Master shippers for inner cartons
  • Ecommerce and parcel outers
  • Partitioned kits and fragile goods
  • Moving bulk industrial components

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Primary packing and distribution roles

Master shippers for inner cartons

Enclosing multiple smaller retail packs or components for palletized transit. The top and bottom flaps provide enough structural support to handle heavy pallet loads when stacked correctly.

Ecommerce and parcel outers

Serving as the primary shipping layer for direct-to-consumer orders. It relies on an external tape seal and provides reliable protection through mixed courier networks when paired with the right board grade.

Partitioned kits and fragile goods

When equipped with internal corrugated dividers, the outer box protects against external impact while the grid prevents glass, bottles, or machined parts from colliding.

Moving bulk industrial components

Transporting heavy or bulky parts often requires reliable containment and stacking support rather than complex presentation. A heavy-duty slotted container handles this work predictably.

Supply chain and fulfillment contexts

High-volume fulfillment centers

The knocked-down flat tubes stack densely on inbound pallets and pop open quickly. They are well-suited for case-forming machinery and taping lines, keeping packing labor predictable.

Industrial parts distribution

Moving heavy components requires a box that can handle top-to-bottom crush resistance. Specifying a double-wall board ensures the box maintains its shape under load.

Consumer goods and retail distribution

Used to move retail-ready products from the warehouse to the store backroom. The enclosed shape helps shield products from dust and handling damage before they reach the shelf.

When to compare other box styles

Need a completely flat interior floor

The minor inner flaps of an RSC leave a gap. If your product might snag or tip into this gap, compare the FEFCO 0204, which features inner flaps that close flush to create a flat floor.

Packing extremely heavy items

If the center tape seam risks blowing out under concentrated base weight, compare the FEFCO 0203 (Full Overlap). Its outer flaps extend across the entire width, creating a double-thick base.

Frequent shelf access

If the box will be used as a picking bin on a warehouse shelf, compare the FEFCO 0200 (Half-Slotted Container), which leaves the top completely open.

Board, closure, and partition choices

Single-wall versus double-wall board

Single-wall handles most standard parcel and pallet jobs. Double-wall increases crush resistance for heavy goods but requires wider slot cuts to prevent the thicker flaps from binding when folded.

Tape, glue, or stitch closures

The manufacturer joint is typically glued before delivery. End-user closure usually relies on packing tape, but heavy-duty industrial loads may require hot melt glue or metal stitching across the major flaps.

Adding internal cell partitions

Dropping a corrugated grid into the box increases vertical support and isolates individual items, but it also adds manual assembly time on the packing line.

Flap orientation and layout

Depending on the production line, the box layout can start with a width panel instead of a length panel. This produces the exact same assembled box but optimizes the flat blank for specific folding machinery.

Clearance and structural adjustments

Slot tuning for heavy board

When specifying thick double-wall or triple-wall corrugated, production requires widening the slot gaps and corner trims so the thick flaps fold flat without crushing each other.

Adjusting the length-to-width ratio

Changing the proportions of the box directly affects the flap height. Keeping the length and width balanced ensures the flaps remain a manageable size for folding.

Adding hand holes or perforations

While a standard slotted container uses straight cuts, adding carrying handles or tear strips requires specific die-cutting steps during production.

Board and packing details

Flap height and extreme box proportions

The height of the major flaps is always exactly half the width of the box. If a box is extremely narrow, the flaps will be very short. If a box is extremely wide, the flaps will be very deep, which can sometimes exceed the folding limits of standard production lines.

Managing the uneven interior floor

Because the minor flaps do not close flush, the interior floor has a slight drop in the center. For products that require a perfectly flat base, a corrugated pad can be dropped inside before loading.

Internal partitions and layout variants

0201_1 and 0201_2 (Internal Cell Partitions)

Adds a multi-piece interlocking grid that drops into the main box. This isolates fragile items and provides strong vertical crush resistance, though it requires manual assembly before packing.

0201a (Alternative Panel Sequence)

Shifts the manufacturer's glue joint to a different panel. This produces the exact same assembled box but allows the production line to optimize the flat blank for specific folding machinery.

0201b (Explicit Slot Tuning)

Models specific slot gaps and corner trims to prevent flap binding when converting heavy double-wall or triple-wall corrugated board.

Additional notes

Flap length and box width

Because the outer flaps must close flush at the center, their length is always half the total width of the box. This geometric rule means very narrow boxes have very short flaps.

FAQs

Closure and sealing

Does this box require packing tape?

Yes. The top and bottom major flaps close flush at the center but do not lock. They must be secured with packing tape, hot melt glue, or strapping before shipping.

Board and strength

Can an RSC handle heavy industrial parts?

Yes, when specified with the right board grade. Moving from single-wall to double-wall corrugated increases the top-to-bottom crush resistance and puncture protection. Heavy loads may also benefit from metal stitching instead of tape.

Inserts and partitions

How do internal dividers affect packing speed?

While corrugated partitions provide excellent protection for glass or machined parts, they usually arrive flat. Packing teams must manually fold and interlock the grid pieces before dropping them into the box, which adds labor time.

Dimensions and fit

Why is the interior floor not perfectly flat?

The two inner (minor) flaps fold in first, but they leave a gap. The two outer (major) flaps fold over them. This creates a slight height drop in the center of the box. If your product needs a flush floor, a flat corrugated pad can be dropped inside.

Production and routing

What changes when ordering double-wall boxes?

Thicker board requires wider slots between the flaps. Without this adjustment, the thick corrugated material will bind and crush against itself when the flaps are folded shut.

Assembly

How does the box arrive for packing?

The manufacturer glues the side joint and ships the box flat. The packing team pops the flat tube open, folds the bottom flaps, and seals the base before loading the product.

Proportions

What happens if I order a very narrow box?

Because the outer flaps must close flush at the center, their length is always half the total width of the box. A very narrow box will have very short flaps, which can make taping more difficult.

Alternatives

When should I consider a full overlap box instead?

If you are packing extremely heavy items and worry about the center tape seam giving way, a full overlap box extends the outer flaps across the entire width, creating a double-thick base.

Match the board grade, closure method, and internal partition needs to your product weight and handling route to get the most out of this standard shipper.

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