Based on this product's specifications, here are some alternatives and similar models
Rack cover Rittal 3086.000 — ABS grey, pack of 4, for rack systems
Summary description:
Rittal 3086.000 is a rack cover made of acrylonitrile butadiene styrene (ABS) in grey. Supplied as a pack of 4 pieces, it is designed to close openings on rack housings and protect equipment from dust and mechanical contact. Suitable for use in server racks, network cabinets and industrial control enclosures where a durable, non-conductive cover is required.