Based on this product's specifications, here are some alternatives and similar models
Angle bracket DMX KW2 narrow corner 40×40×17×2 mm
Summary description:
DMX KW2 narrow corner angle bracket with dimensions 40×40×17×2 mm, designed for joining or reinforcing right-angled joints in light structural and furniture applications. Compact steel bracket suitable for mounting panels, frames, or shelves where a slim profile is required. Provides added rigidity at corners and simplifies assembly with preformed shape.