Based on this product's specifications, here are some alternatives and similar models
Bracket ELKO-BIS angled support 100×150 mm galvanized (model 10.1.1 OC)
Summary description:
Angled support bracket ELKO-BIS 100×150 mm, galvanized steel construction for corrosion resistance. Designed to provide rigid corner reinforcement and mounting for structural or installation tasks. Fits general-purpose supports, shelving, frames and outdoor or indoor assemblies where a durable, pre-drilled metal angle of specified dimensions is required.