In-fold tray, four corners glued Box Template Generator

In-fold tray, four corners glued. The corners fold inward as triangular webs and are glued flat against the walls, giving smooth unbroken sides with nothing showing on the outside. The tray to pick when the outside gets printed.

Checked against the plate. This blank has been compared side by side with the drawing in the FEFCO Code, 12th Edition, and matches. That is a statement about the drawing, not a guarantee — always cut and fold a sample before committing to a die.

What is In-fold tray, four corners glued?

In-fold tray, four corners glued is a folding tray, erected from a flat blank by hand or on a former. The corners fold inward as triangular webs and are glued flat against the walls, giving smooth unbroken sides with nothing showing on the outside. The tray to pick when the outside gets printed.

Uses

Retail and gift packaging, where the box is seen by the customer
High-volume packing lines, since a pre-glued blank erects in one movement

Advantages

Cut from a single blank, so there is one tool and one part to stock
Arrives glued and flat, and erects quickly by hand or by machine

Disadvantages

The glued joint sets the minimum order — short runs are rarely economical

Typical industries

General packing and light manufacturing

Recommended board grades

Folding boxboard or solid bleached board, typically 250–450 microns. Heavier board for larger cartons, lighter where the carton is filled by machine.

At a glance

Code	`B4020`
Family	Folding carton (ECMA)
Also known as	B40.21.00.00, in-fold tray, four corner glued
Blank size at this size	385 × 337 mm
Panels	9
Creases	12

Get the dieline

The generator draws this style to whatever dimensions you enter and exports it as a 1:1 PDF, an SVG, or a DXF with the cut, crease and perforation lines on separate layers. Nothing to sign up for.

Open B4020 in the generator

Other codes in this group

Browse every code, or read what the groups mean.

Every FEFCO code we build — all 244 of them, grouped.
FEFCO codes explained — what the four digits mean and what each group covers.
How to measure a box — inside, outside and crease-to-crease.
Flutes and calipers — why board thickness changes the blank.