Based on this product's specifications, here are some alternatives and similar models
Angle Cover Kopos EKE white 100 x 60 mm (model 8553)
Summary description:
Kopos EKE angle cover in white, model 8553, sized 100 x 60 mm. Designed as an external cover for cable ducts or conduit corners, it provides a neat finish and protection at 90° bends. Suitable for installation in electrical routing systems where a rectangular corner cover is required; compatible with matching Kopos ducting components.