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The SL25-05 is a StarModul T-joint for 2.5×2.5 cm square tube. It connects an intermediate post to a continuous horizontal beam, forming a T shape. It is screw-assembled, without welding, and comes with screws included.
It is used on posts that are not at the corners, along the sides of the structure. The 2.5×2.5 cm tube is for small, lightweight structures, where a slim line and clean finish are desired. Check the 3D viewer on this page to see the exact shape of the part.
Fit the tubes into the part, check the corner bracket and screw it in place. No welding or special machinery is needed, so the structure can be assembled directly on site. For this joint, you will need 2.5×2.5 cm galvanised steel tube (1.5 mm thick); we can send it to you cut to size.
See also: all joints for 2.5×2.5 cm tube without flanges and the 3D structure configurator, which calculates the joints and tubes for your project.
Yes. Each joint is supplied with its screws.
No. The entire StarModul system is screw-assembled, so it can be installed and removed without welding.
With stock, 2–3 days in Catalonia and Aragon and 7–8 days in the rest of Spain. Without stock, 2–3 weeks.
Yes. We work to custom specifications and can send you the complete kit: joints, cut-to-size tubes, panels for facade and roof, trims and screws. Request a quote.
| Weight | 2 kg |
|---|---|
| Measurement | 2.5 x 2.5 cm |
3,16€ (excl. VAT)
Explore the interactive model to view the product’s geometry and configuration from different angles.




With the StarModul 3D steel structure configurator, you can define the dimensions, geometry, and initial configuration of a structure using our bolted connection system.
The tool generates a preliminary list of the necessary joints, a quantity takeoff for pipes and profiles, and an initial assessment of the configured components.