Based on this product's specifications, here are some alternatives and similar models
Adapter for connector cutouts Rittal SZ 2402.000, steel, silver
Summary description:
Rittal SZ 2402.000 adapter designed for connector cutouts, manufactured from steel with a silver finish. Serves to adapt and secure electrical connector openings in enclosures and control cabinets. Suitable for use in industrial electrical installations where durable metal mounting and reliable connector integration are required.