Based on this product's specifications, here are some alternatives and similar models
Cabinet reinforcement Rittal CP 6106.110 — steel, white, for CP 6 series
Summary description:
Rittal CP 6106.110 is a rigid cabinet reinforcement element made of steel with white finish, designed for CP 6 series enclosures. It provides a secure mounting interface for support-arm connections and increases structural stability of electrical and industrial housings. Suitable for control cabinets, switchgear and equipment racks where reinforced attachment points are required.