Square corner post Box Template Generator

Square corner post. Four panels folding into a closed square tube. Stiffer than the triangular post for the same board and it sits flat against two walls of the case, so it will not rotate under load.

Not yet plate-checked. This template folds, closes and exports cleanly, but its blank has not yet been matched against the standard's own drawing in detail. Treat it as a starting point and check it before you spend anything.

What is Square corner post?

Square corner post is a folding carton with a glued side seam, closing at each end with a tuck, a lock or a glued flap. Four panels folding into a closed square tube. Stiffer than the triangular post for the same board and it sits flat against two walls of the case, so it will not rotate under load.

Uses

Transit and e-commerce packing, where the box is handled by a carrier

Advantages

Cut from a single blank, so there is one tool and one part to stock

Disadvantages

No standard style suits every product; check the fit against a sample before committing to a tool

Typical industries

General distribution and warehousing

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	`SQPOST`
Family	Corrugated (FEFCO)
Also known as	square corner post, box post
Blank size at this size	225 × 603 mm
Panels	5
Creases	4

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 SQPOST 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.