Based on this product's specifications, here are some alternatives and similar models
Mounting plate Rittal KX for bus enclosure 175x385 mm, screw-mounted, white
Summary description:
Rittal KX mounting plate for bus enclosures, dimensions 175 x 385 mm. Screw-mounted steel plate in white finish designed for installation of electrical components inside bus-type enclosures. Key parameters: screw mounting, width 400 mm, height 200 mm, weight 1 kg. Suitable for organizing terminals, small devices and wiring inside electrical cabinets.