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EVC41111

Side-Locking Corrugated Mailer Tray

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

Side-wall roll-overs lock the tray base
Single-thickness front and back walls
Delivered flat for manual assembly

About this product

The EVC41111 is a one-piece corrugated mailer that forms a presentation-style tray with a hinged lid. Unlike mailers that lock at the front, this package uses roll-over panels on the left and right sides to capture the corner dust flaps and secure the base.

Because the tray locks independently of the lid, it can be assembled, loaded, and moved around a packing station before final closure. It is a strong fit for manual fulfillment, subscription boxes, and presentation kits where a clean unboxing experience is the priority.

Common uses

E-commerce kits
Retail presentation
Subscription boxes
Lightweight parts

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Manual fulfillment and presentation kits

Subscription boxes and presentation kits

The hinged lid and friction tucks provide a clean, satisfying unboxing experience. The single-thickness front wall allows the recipient to easily access the contents once the lid is lifted.

Staged manual fulfillment

Because the side walls lock the tray base completely, the open tray holds its shape without the lid. Packers can erect the base, load the product, and stage the open box for later closure, which is difficult with mailers that rely on the lid to hold the entire package together.

Lightweight parts kitting

For operations picking multiple small items into a single order, the open tray provides a stable container that can travel down a packing line before the lid is sealed.

Retail shelf-ready presentation

The lid can be folded back or removed entirely, leaving a clean tray with double-thick side walls that can hold lightweight products on a retail shelf.

Retail, e-commerce, and kitting

E-commerce and parcel shipping

While the lid features a front tuck and two side tucks, it relies on friction. For parcel networks and courier delivery, the package should be secured with a clear wafer seal, branded label, or packing tape to prevent it from opening in transit.

Third-party fulfillment centers

The independent base locking mechanism helps manual assembly lines. Workers can pre-fold the trays in batches, stack them open, and load them as needed without the boxes unfolding.

Boutique retail packaging

The one-piece blank provides a continuous exterior surface for branding. The clean interior lines, free of glue tabs, support high-end presentation goals.

When to compare front-locking mailers

Heavy stacking or front-impact risk

This package places its double-wall strength on the left and right sides, leaving the front and back as single layers of corrugated board. If your product requires maximum front-crush resistance or heavy vertical stacking, compare this to a front-roll-over mailer where the front wall is reinforced.

High-speed automated packing lines

The side-locking sequence and angled tucks are designed for manual assembly at a packing bench. If your volume requires automated case erectors or linear folder-gluers, compare this to a glued tray or auto-bottom box.

Board caliper, closure, and locking tongues

Matching the double crease to board thickness

The side roll-over panels require a precise double crease to fold cleanly over the corner dust flaps. If the board caliper changes, for example moving from a thin E-flute to a thicker B-flute, the crease distance must be recalculated so the side locks seat properly without tearing.

Sealing method

Decide how the box will be closed for transit. If you are using a branded label to seal the front tuck, ensure the artwork placement accounts for the label size and the lid edge.

Interior print and unboxing visibility

Because the lid hinges from the back, the interior of the lid is prominently visible upon opening. Decide if this space will be used for instructions, branding, or welcome messages.

Flute profile selection

Thinner flutes like E-flute or F-flute allow the side roll-over panels to fold sharply and lock securely. Thicker boards can be used, but they require careful adjustment of the fold clearances.

Adjusting the side locks and lid tucks

Locking tongues

The number of locking tabs on the side roll-over panels can be adjusted based on the depth of the box. Deeper or longer trays may benefit from additional locking tongues to keep the inner side wall sitting flat against the base.

Lid tuck friction adjustments

The angles and depth of the front and side tuck flaps can be modified to increase or decrease the friction fit, depending on how tightly the lid needs to hold before taping.

Double crease spacing

The gap between the inner and outer side walls can be widened to accommodate thicker corrugated board, ensuring the roll-over panels do not bind during assembly.

Packing details

Print surfaces and unboxing visibility

The one-piece blank allows for continuous exterior printing. Because the lid hinges from the back, the interior of the lid is prominently visible upon opening, making it an excellent location for instructions, branding, or welcome messages.

Additional notes

Flat delivery and storage

These mailers are delivered completely flat, which maximizes pallet density and minimizes the warehouse space required before packing.

FAQs

Does this tray require glue to assemble?

No. The tray is erected entirely by folding. The left and right side panels roll over the corner dust flaps and lock into the base, holding the tray together without adhesive.

Can this box be shipped through parcel networks as-is?

The friction tucks keep the lid closed for handling, but parcel shipping usually needs an external seal. Applying packing tape or a strong adhesive label helps secure the lid during rough courier transit.

What flute profiles fit this mailer?

Thinner profiles like E-flute or F-flute are common choices because they allow the side roll-over panels to fold sharply and lock securely. Thicker boards can be used, but the double creases must be carefully adjusted to prevent the corrugated material from binding.

Can this mailer be erected by automated machinery?

This template is primarily designed for manual assembly at a packing bench. The angled tucks and side-locking sequence are generally not a fit for linear folder-gluers or automated case erectors.

Is the front wall double-thick like other mailers?

No. In this specific package, the front and back walls are a single layer of corrugated board, while the left and right sides are double-thick. This makes the front easier to access but reduces front-impact resistance compared to a front-locking mailer.

Why is a physical sample important for this package?

A sample verifies that the side-wall locking tabs seat correctly into the base and that the lid side tucks provide enough friction. This confirms the board thickness matches the crease allowances before a full production run.

How does the base stay locked before the lid is closed?

The left and right side walls fold over the front and back corner dust flaps, trapping them in place. This friction lock holds the tray base together independently of the lid.

Can the interior of the lid be printed?

Yes. Because the package is cut from a single flat sheet of corrugated board, the interior of the lid can be printed along with the rest of the inside surface, which is clearly visible during unboxing.