Based on this product's specifications, here are some alternatives and similar models
Wall-mounted PC Holder StarTech 2NS-CPU-WALL-MOUNT, supports up to 18 kg, adjustable 50–200 mm, black
Summary description:
Wall-mounted PC holder StarTech 2NS-CPU-WALL-MOUNT is a heavy-duty shelf for desktop computer cases and towers with a maximum load of 18 kg (40 lb). Tool-less width adjustments accommodate computer widths from 50 to 200 mm (1.9–7.8 in). Physical dimensions: W 220 × D 239 × H 186 mm. The unit weighs 2.6 kg and comes in black, providing secure vertical storage to free desk space and protect the chassis.