Based on this product's specifications, here are some alternatives and similar models
Enclosure accessory Rittal SV 9666.073 — polystyrol white housing
Summary description:
Rittal SV 9666.073 is an enclosure accessory featuring a white polystyrol housing. Designed for use with Rittal systems, this component provides non-metallic protection and aesthetic finishing for cabinets or modules. Suitable for indoor electrical or electronic enclosures where a lightweight, insulating cover or housing is required.