Based on this product's specifications, here are some alternatives and similar models
Pull-out shelf PULSAR for 19-inch rack cabinets, 420×400 mm
Summary description:
Pull-out shelf PULSAR designed for 19-inch rack cabinets with mounting suitable for RAPW600. Dimensions 420×400 mm provide a stable platform for servers, network equipment, or peripherals. The sliding mechanism allows easy access to installed devices for maintenance and cable management. Compatible with standard 19" rails and intended for data center or telecom rack use.