Based on this product's specifications, here are some alternatives and similar models
19" Rack Angle Bracket SCHROFF Pentair 3U mounting bracket 24564198
Summary description:
SCHROFF Pentair 19" angle mounting bracket, model 24564198, designed for 3U (3-height unit) installations in 19-inch rack systems. Provides secure side mounting and alignment for rack equipment, enabling stable installation of servers, chassis or components. Suited for data centers, industrial cabinets and telecom racks where reliable mechanical support and precise positioning are required.