The A.L. malleable cast iron elbow No. 90 with set screw is an essential component for shelving systems with closed rectangular tube frames. Since all threads are standard right-hand threads by default, closing a rectangle is only possible using a pipe section and a fitting with a right-left thread. In this version, the problem is solved using a plain pipe section without threads and a fitting with a locking screw. Using a standard Allen key, the set screw can be tightened effortlessly to ensure a secure connection.

Made from high-quality malleable cast iron, this elbow impresses with its robustness and precision. With an exact 90-degree angle, it provides a reliable connection between shelving boards and supports. The black finish gives the No. 90 elbow an attractive, refined look. Versatile and suitable for shelving projects in living spaces, offices, or storage rooms, this elbow offers a stable structure for a wide range of requirements — enabling flexible design and easy customisation of shelving systems.