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FEFCO 0308

Heavy-Duty Telescopic Box with Smooth Interior

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

Exterior-glued corners keep the interior completely smooth
Full-depth lid creates double-wall vertical stacking strength
Telescopic fit adapts to slight variations in product height

About this product

A two-piece package built for absolute vertical strength and a snag-free payload. By securing the corner flaps to the outside of the walls rather than the inside, both the base and the lid maintain a perfectly flat interior.

The full-depth lid slides completely over the base, creating a double-wall perimeter that supports heavy stacking. The tradeoff is assembly labor: your packing team or tray-erecting equipment must glue eight external corners to build the finished set.

Common uses

High-quality print and document archiving
Heavy industrial components
Reusable internal storage bins
Sensitive electronics and displays

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Products that benefit from a smooth interior

High-quality print and document archiving

The smooth interior prevents edge curling or snagging when loading dense stacks of A4 paper, books, or bound materials. The flat walls protect delicate corners during transit.

Heavy industrial components

The double-wall perimeter handles immense vertical weight, making it a strong choice for dense metal parts or electronics that need high pallet stacking.

Reusable internal storage

The friction-fit lid can be removed and replaced repeatedly without degrading the box, serving well as an in-plant kitting or storage bin.

Sensitive electronics and displays

The lack of internal overlapping layers ensures delicate screens, chassis, or calibrated instruments slide in without catching on corrugated edges.

Industry and packing environments

Commercial printing and publishing

Printers use this box to protect the sharp corners of bound books or heavy paper stacks. The lack of internal flaps means the product slides in cleanly without catching on corrugated edges.

Electronics and precision manufacturing

Allows tight-tolerance packing of sensitive equipment. The flat interior walls ensure that internal corrugated layers do not scratch or catch the product during loading and unloading.

Archival and long-term storage

Facilities storing heavy records or artifacts rely on the double-wall vertical strength to stack pallets high without crushing the bottom layers over time.

When to consider a different telescopic box

When internal flaps will not damage your product

If your payload is not sensitive to internal corrugated edges, a standard Telescopic Box (FEFCO 0300) keeps the glued corners hidden inside the box for a cleaner exterior look.

When packing speed is the primary bottleneck

If manual gluing slows down your fulfillment line, a Pop-Up Telescopic Box (FEFCO 0303) shifts the gluing labor to the factory, allowing instant assembly.

When you do not need maximum vertical stacking strength

If your product is lightweight or supports its own weight, a Short-Lid Box (FEFCO 0306) uses far less material and is easier for the end-user to open.

Close variants and lookalike dielines

The closest library neighbors include 0304, 0303, 0309. 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.

Assembly and transit decisions

Assembly method and equipment

Manual packing requires gluing or taping eight external corners. If you use automated tray erectors, verify they support exterior-flap folding, as standard linear folder-gluers cannot process this cross-directional flap design.

Board thickness and lid clearance

The lid must be parametrically scaled to slide over the base. Changing from a thin micro-flute to a heavy double-wall board requires recalculating the clearance gap so the lid does not bind or fall off.

Outer sealing for parcel transit

The friction-fit lid holds well under vertical pallet weight, but individual courier shipments usually require external strapping or heavy-duty tape to prevent the lid from separating during a drop.

Print layout and exterior flaps

Because the corner flaps are glued to the outside of the side panels, they will interrupt continuous graphics on the short ends of the box. Plan artwork to accommodate these visible joints.

Practical template adjustments

Lid depth variation

While a full-depth lid provides maximum strength, the lid height can be adjusted to leave a gap at the bottom, making it easier for end-users to grip the base and lift the box open.

Finger cutouts for easy opening

Adding half-moon cutouts to the sides of the lid allows end-users to grip the base tray, breaking the friction seal without tearing the board.

Clearance gap tuning

The mathematical offset between the base and lid can be tightened for a secure friction hold or loosened for faster, drop-over packing.

Board and packing details

Print panel and label area

The lid provides a large, uninterrupted flat surface for high-quality printing or large routing labels, though the exterior corner flaps will be visible on the short ends of the assembled box.

Additional notes

Production routing and material sprawl

Because this package requires two separate blanks, it often requires two press passes or larger material sprawl. This changes the production routing compared to single-piece boxes.

FAQs

Route and shipping

Can this box be shipped through standard parcel networks?

The telescopic lid relies on friction. For rough courier networks, you should secure the lid with strapping or heavy-duty tape to prevent it from separating during transit.

Product fit and inserts

Why are the flaps glued on the outside?

Gluing the flaps externally removes all overlapping cardboard from the inside of the tray. This prevents dense, precise-fitting items like paper stacks or machined parts from catching on internal edges.

Packing labor

Does this require specialized packing equipment?

If you automate assembly, your tray erector must be capable of folding and gluing flaps to the exterior. Standard linear folder-gluers cannot process this cross-directional flap design.

Board and finish

How does board thickness affect the lid fit?

The lid is mathematically scaled to fit over the base. If you switch from a thin micro-flute to a thick double-wall board, the clearance gap must be recalculated so the lid does not bind or tear.

Presentation

Can I use this for retail display?

While the smooth interior looks clean when opened, the exterior-glued flaps give the outside of the box a more industrial appearance. If exterior aesthetics are critical, consider a structure with internal flaps.

Modifications

Is it possible to adjust how tightly the lid fits?

The friction fit can be adjusted by changing the clearance tolerances in the template, depending on whether the packing line needs a tight hold or a looser, easy-lift lid.

Assembly

Can we assemble this box without glue or tape?

No. Both the base and the lid require structural adhesive or tape on the exterior corners to hold their three-dimensional shape.

Storage

Does this box ship flat?

Yes. Both the base and the lid are delivered as flat, unglued blanks, which saves space in your warehouse before packing.