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EVC41069

Corner-Buttressed Stacking 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.
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Product details

Top highlights

Integrated triangular corner posts for vertical stacking support
Tongue-and-slot base locks hold the structure square
Relies on manual assembly for the corner folds

About this product

The EVC41069 is an open-top corrugated tray featuring integrated triangular columns in all four corners. Formed by extensions of the inner side walls, these buttresses provide vertical compression support, allowing trays to be stacked high without a lid.

Because the corner posts rely on a specific pre-folding sequence before the side walls lock into the base, this tray takes more manual assembly time and uses more corrugated board than a standard tray. It is typically chosen when the need for stacking support or internal product blocking outweighs the cost of slower fulfillment.

Common uses

Agricultural produce
Heavy industrial parts
Retail-ready displays for jars or bottles
Master shippers for retail cartons

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Heavy Stacking and Open-Top Display Roles

Agricultural and Produce Stacking

The open top allows for ventilation and easy access, while the reinforced corners help support the weight of multiple loaded trays stacked on a pallet.

Heavy Industrial Parts

The double-wall sides and internal corner columns act as built-in blocking, helping to keep heavy metal or dense components from shifting into the corners during transit.

Master Shippers for Retail Cartons

When shipping smaller retail boxes, the corner columns bear the pallet weight, reducing the risk of crushing the inner cartons.

Fragile or Heavy Glass Jars

The corner posts help block jars from shifting into the absolute corners and help support the weight of stacked trays in retail or storage settings.

Agricultural, Industrial, and Retail Environments

Retail-Ready Displays for Heavy Goods

For products like glass jars or dense liquids, the tray provides base support for shelf loading while keeping the primary products visible. The corner columns can also help frame the products.

Agricultural Supply Chains

Field packing operations often use this style when produce needs to be stacked high on pallets immediately after picking, relying on the corners to help protect the bottom layers.

Industrial Component Distribution

Facilities moving heavy parts between locations use the corner blocking to help keep dense items centered during transit.

When to Compare a Standard Roll-End Tray

High-Volume Automated Packing

If your fulfillment line relies on automated tray erectors, the complex corner pre-folds of the EVC41069 may slow down the process. A standard machine-erected tray or a simpler roll-end tray is often a better fit for automation.

Lightweight Products

If the tray does not need to support heavy vertical loads, the extra material and folding time required for the corner buttresses may not be justified. Compare a standard FEFCO 0422 or 0435.

Board Thickness, Assembly Labor, and Internal Clearance

Board Grade and Flute Profile

The complex folds used to form the triangular corners are sensitive to heavy or rigid board grades. While double-wall board offers maximum strength, it increases the risk of cracking at the corner folds. E or B flute is generally easier to assemble.

Internal Volume Reduction

The triangular buttresses occupy physical space inside the tray. The internal clearance should be calculated taking these columns into account, as products may not sit flush into the absolute corners.

Assembly Labor Allocation

This is a manual-assembly package. The fulfillment team should plan for the multi-step process of pre-folding the corner angles before rolling the inner walls down to lock the base.

Outer Shipping Requirements

Because this is an open-top tray, it does not enclose contents for mixed-carrier courier networks on its own. Decide if a separate lid or an outer master shipper is needed for the final route.

Adjusting the Corner Columns and Locking Tabs

Corner Column Width and Angle

The width and angle of the triangular buttresses can be adjusted to change the size of the internal column, balancing stacking support against usable interior space.

Locking Tongue Dimensions

The size of the locking tabs and the receiving slots in the base can be modified to help keep the base locked, especially if the board thickness changes.

Corner Column Height

The height of the buttress can be adjusted relative to the overall tray height, depending on how much vertical support or product blocking is needed.

Packing details

Flatbed Die-Cutting Requirements

Because of the angled cuts for the corner columns and the internal receiving slots in the base, this tray is produced on flatbed die-cutting equipment rather than simpler rotary slotters.

Additional notes

Physical testing for corner fold behavior

Because the corner columns rely on precise angled folds, a physical sample helps verify that the chosen board grade folds cleanly without cracking and that the locking tongues seat properly in the base.

FAQs

Can this tray be erected on automated packaging lines?

The triangular corner buttresses rely on a specific, angled pre-fold before the side walls can be rolled down and locked. This makes it a manual-assembly package unless highly specialized tooling is developed.

How much internal space do the corner columns take up?

The exact volume depends on the specified width and angle of the buttresses. When sizing the tray, you should account for the fact that square or rectangular products may not slide all the way into the absolute corners of the base.

Can we use a heavy double-wall board for maximum stacking strength?

While double-wall board increases compression strength, it can cause issues with the complex corner folds. The tight angles used for the buttresses may crack or bind if the board is too thick. Physical prototyping is recommended if moving away from standard single-wall flutes.

Is this tray suitable for parcel shipping?

This is an open-top tray designed for palletized stacking, retail display, or master shippers. It does not have a lid and does not enclose contents for a mixed-carrier courier network without a separate outer box.

Does the tray require glue or tape to stay assembled?

The tray uses a mechanical tongue-and-slot system. The inner side walls roll over and lock into receiving slots in the base panel, keeping the structure and corner columns in place without adhesive.

Why does this tray use more material than a standard tray of the same size?

To form the corner buttresses, the inner side walls must extend further across the flat blank. This creates a larger, more irregular footprint that increases the overall corrugated board used per unit.

How high can we stack these trays?

The safe stacking height depends on the chosen board grade, the weight of the product, and the storage environment. The corner columns provide vertical support, but physical compression testing is recommended for heavy pallet loads.

Can the corner columns be printed?

Because the corner columns are formed by extensions of the inner side walls, printing applied to the inside surface of the flat blank will generally be visible on the buttresses once the tray is assembled.