Extra-Flat Square End Cap - Black White - MULTIPLE SIZES

Extra-flat square end cap: a clean finish that protects tube edges

Designed for visible square sections, this end cap is installed by pressure fitting and its flush head provides a clean, uniform look. It limits the entry of dust and moisture, reduces marks from contact, and keeps a neat, minimal line.

Beyond aesthetics, it protects the inside of the tube and extends the lifespan of posts, frames and structures (steel, aluminium, PVC).

Extra-flat square end cap at a glance

• Flush head: slim profile, clean look with no visible “button”.
• Edge protection: against light impacts, dust and moisture.
• Long-lasting: durable LDPE material, suitable for frequent use, indoor / sheltered outdoor use.
• Quick installation: manual fitting, adjustable with a rubber or wooden mallet.
• Wide compatibility: square tubes and profiles (16×16 → 60×60 mm) in steel, aluminium or PVC.

For which projects?

Ideal whenever the end of a square tube remains visible: it secures the edge, improves alignment and enhances appearance. Perfect for furniture, fittings, tubular constructions and technical structures where a clean finish is essential.

Indoor furniture / sheltered outdoor use

On furniture, tubular shelves, consoles or display units, the extra-flat square end cap:

• protects the tube edge,
• softens contact with surfaces,
• provides a discreet and tidy finish.

DIY, fittings & decoration

For custom projects, no drilling or screws are needed: simply press-fit the cap into the tube. On a frame, rack or showcase, it finishes the structure neatly and can be easily replaced if the project evolves.

Industrial & professional structures

In workshops, warehouses or exhibition areas, it is used on:

• shelving systems,
• tubular frames,
• machine bases,
• display stands.

It protects tube edges and ensures a consistent finish. LDPE combines flexibility and strength to absorb minor impacts.

Modular constructions & temporary installations

For stands, modular partitions or events, this end cap helps to:

• protect cuts during repeated assembly and disassembly,
• reduce contact marks,
• maintain a clean finish even on temporary structures.

It can be installed and removed in seconds.

How to install an extra-flat square end cap?

• Measure: the external size of the tube (e.g. 20×20, 30×30, 60×60 mm) and choose the matching end cap.
• Clean: the tube end (inside and edge) to remove dust, debris or grease.
• Pro tip: a quick pass with a file to deburr the inside of the tube (if needed) makes insertion much easier.
• Insert: push the ribbed part into the tube until flush; finish with a mallet if required.

The retention ribs hold the cap securely without glue or screws, allowing easy replacement.

Ajile: your specialist in plastic fasteners and finishing components

Since 2012, Ajile has been a trusted online supplier of plastic fasteners and finishing parts, based in Schiltigheim, Alsace. True to the spirit of a local hardware store, we offer quality products with fast shipping and flexible quantities.

We source our products directly from manufacturers in France and Germany, then stock them in our workshop near Strasbourg. Our customers benefit from responsive customer service and personalised order follow-up.

With Ajile, you can buy exactly what you need thanks to single-unit sales and enjoy volume discounts for larger quantities.

Orders are shipped immediately after payment via La Poste, Colissimo or Chronopost, in France and worldwide.

Check our customer reviews on Société des Avis Garantis: we are proud of our 4.9/5 rating and positive feedback.

No need to travel: order comfortably from home… This is Ajile.

Discover our range of extra-flat square end caps online

The Ajile extra-flat square end cap is the ideal solution to protect, finish and enhance square tubes, profiles and posts with a flush, discreet finish.

Our LDPE range covers sizes from 16×16 to 60×60 mm and is available in black and white to suit both technical and aesthetic needs. Ideal for:

• frames, tubular furniture and display units,
• metal structures and professional equipment,
• fences & gates (posts, crossbars),
• modular assemblies and temporary installations.

Find the extra-flat square end cap that matches your tube size and application: flush finish, edge protection and quick installation.

Order directly from Ajile.biz and benefit from competitive prices, single-unit sales, fast delivery and a customer service team based in France.

Ajile: professional quality, the right fit, delivered to your door.