Based on this product's specifications, here are some alternatives and similar models
Network cabinet base ROLINE 26.21.0244 800×800 mm Black
Summary description:
Base for a network cabinet by ROLINE, model 26.21.0244, with dimensions 800×800 mm in black. Designed to serve as the supporting foundation for compatible rack enclosures, it provides stable placement and load distribution for mounted equipment. Suitable for server rooms, data closets and network installations where a dedicated cabinet base is required.