Based on this product's specifications, here are some alternatives and similar models
Angle bracket DMX KM7 80×80×40×2 mm right-angle mounting plate
Summary description:
DMX KM7 angle bracket, dimensions 80×80×40×2 mm, is a right-angle mounting plate designed for structural and fastening tasks. Made for stable corner connections, it suits wood, metal and composite assemblies where a flat, wide support is needed. Use for shelving, frames, furniture or construction fixtures to increase joint strength and alignment.