Based on this product's specifications, here are some alternatives and similar models
Rack rail EFB Elektronik 53719.1
Summary description:
The EFB Elektronik 53719.1 rack rail is designed for 4U rack capacity, featuring a metallic finish. With a width of 35 mm, it provides robust support for mounting equipment securely in a standard rack setup. Ideal for organizing and optimizing space in server rooms or data centers, this accessory ensures durability and reliability for your electronic installations.