Based on this product's specifications, here are some alternatives and similar models
Mounting kit Rittal SV 9686.430 – plastic, silicone, steel components, metallic finish
Summary description:
Rittal SV 9686.430 is a mounting kit composed of plastic, silicone and steel components with a metallic finish. Supplied as a single pack, it provides the parts needed for installing or retrofitting enclosures and related equipment. Suitable for electrical cabinets and industrial housings where specified materials and corrosion-resistant steel parts are required.