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EVF95005

Icosahedron Box

Available in a wide range of custom configurations & material selection.
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Affordable delivery across North America.
Design support, warehousing, testing, assembly available.
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Product details

Top highlights

20-sided geometric shape (icosahedron)
Usually assembled and glued by hand
Thin paperboard helps maintain sharp corners

About this product

The EVF95005 is a specialty folding carton that forms a 20-sided regular polyhedron, commonly known as an icosahedron or a d20 shape. Built from a single flat blank of 20 equilateral triangles, it creates a striking, geometric unboxing experience for premium promotions, gaming products, and luxury gifts.

Because of its complex 3D shape, this box is usually assembled and glued by hand. It is delivered flat and folded along 11 internal seams, making it a high-impact packaging choice that requires planning for fulfillment labor.

Common uses

Tabletop gaming and RPG dice promotions
Luxury confectionary and chocolate truffles
Educational geometry kits
High-end corporate gifting

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Triangle edge length

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Practical Uses for the Icosahedron Box

Tabletop Gaming and RPG Promotions

The classic d20 shape is instantly recognizable in gaming communities, making this a strong promotional box for dice sets, miniatures, or special edition rulebooks.

Luxury Confectionary

Used for high-end truffles or wrapped candies where the unboxing experience and visual presentation on a display table outweigh standard stacking efficiency.

Corporate Gifting and PR Kits

A highly distinctive shape that stands out immediately in a mailer box, ideal for holding small, premium items intended to make a lasting impression.

Educational and STEM Kits

The platonic solid geometry makes it a natural fit for educational puzzle boxes or math-focused promotional kits.

Who Uses 20-Sided Packaging

Promotional Marketing Teams

Agencies use this shape when the package itself needs to be a conversation piece. The 20 faces offer unique opportunities for sequential messaging or puzzle-like graphic reveals.

Specialty Fulfillment Operations

Teams handling this box should plan for manual assembly time. The flat blank is rolled into a sphere-like shape, and 11 separate flaps are secured by hand.

Independent Game Publishers

Publishers looking for a unique unboxing experience for premium dice or tokens often use this shape to match the theme of their games.

When to Consider a Different Geometric Shape

When retail shelves demand dense stacking

This shape rests on a single triangular face. If you need efficient shelf density, compare this to a standard folding carton or a hexagonal box with a flat base.

When packing lines rely on automated erection

The icosahedron is usually erected by hand. If your volume points toward machine erection, a crash-lock or straight-line carton may be a better fit.

Key Decisions for Production and Assembly

Material Thickness and Vertex Crowding

Five triangular faces meet at every point on this box. If the paperboard is too thick, the material may bind and crush at the corners. Thin, high-quality folding boxboard (FBB or SBS) is often preferred. Corrugated board is rarely a fit.

Adhesive Strategy and the Final Seal

The box relies on 11 internal glue flaps. The final flap is sealed after the shape is closed, meaning there is limited access to apply pressure from the inside. Discuss whether to use a high-tack double-sided tape or a fast-setting liquid adhesive for assembly.

Shipping Flat vs. Pre-Assembled

Shipping the boxes flat saves freight but shifts the assembly step to the final fulfillment team. Shipping them pre-assembled requires large outer transit boxes to protect the empty 3D shapes.

Graphic Orientation Across 20 Faces

Designing graphics for an icosahedron requires 3D mapping. Artwork that crosses the fold lines should account for the angles at which the triangles meet when the box is fully erected.

Modifying the Icosahedron Template

Overall Scale

The entire shape scales uniformly based on the edge length of the equilateral triangles. The size can be adjusted to fit the product, provided the final flat blank still fits efficiently on a standard printing sheet.

Glue Flap Bevels

The angles at the ends of the 11 glue flaps can be adjusted to help them clear each other inside the closed shape.

Flap Width Adjustments

The width of the internal glue flaps can be modified to accommodate different tape widths or adhesive application methods.

Packing details

Prototyping the Final Closure

Because the final flap is sealed without internal access, requesting a physical sample helps fulfillment teams test their preferred tape or adhesive before a full production run.

Additional notes

DIY Assembly Kits

For educational or promotional kits, the flat blanks can be supplied directly to the end-user with pre-applied double-sided tape, allowing them to build the shape themselves.

FAQs

Can this box be glued on a machine?

Because the icosahedron rolls into a closed 3D shape, it is usually folded and glued by hand rather than processed on a straight-line folder-gluer.

How is the final flap sealed?

The final closure flap is sealed after the box is closed. High-tack double-sided tape or a specialized adhesive strategy is often used for this final seam since internal pressure cannot be applied.

Can I make this box out of corrugated board?

Because five panels converge at every point, corrugated board is often too thick and may bind or crush at the corners. This shape is usually produced in thin, strong paperboard.

Does this box sit flat on a table?

It rests on one of its 20 triangular faces. While it will sit still, it does not have a wide, flat base like a traditional cube, making it prone to rolling if bumped.

How is this box shipped to the fulfillment center?

It is usually shipped flat as a die-cut blank. The fulfillment center then handles the folding, gluing, and product insertion.

Can I ship this box directly in the mail?

The geometric shape and glued seams are usually placed inside a sturdy outer shipping box to protect the presentation during transit.

What products fit well inside an icosahedron?

Small, relatively lightweight items like gaming dice, wrapped confections, or novelty tokens fit well. The internal volume is roughly spherical, so rigid rectangular items may leave significant void space.

How do I align artwork across the folds?

Artwork should be mapped using a 3D model or physical mockup. Since the triangles meet at specific angles, continuous patterns require careful alignment across the crease lines.