Based on this product's specifications, here are some alternatives and similar models
Support Rail Rittal SV 9342.920 — Polyamide, black
Summary description:
Rittal SV 9342.920 is a support rail made of polyamide in black finish. Designed for mounting and support applications in enclosures and control cabinets, this component provides durable, non-conductive support for equipment and wiring. Suitable for use where corrosion resistance and electrical insulation are required.