Based on this product's specifications, here are some alternatives and similar models
Side panel SCHROFF 24566131 for 3U chassis, depth 355 mm
Summary description:
Side panel SCHROFF 24566131 designed for 3U enclosures with a chassis depth of 355 mm. Manufactured by SCHROFF to replace or upgrade side coverings, it provides a precise fit and protects internal components from dust and mechanical impact. Suitable for industrial racks, server cabinets and electronic housings where original OEM compatibility is required.