Based on this product's specifications, here are some alternatives and similar models
2 Post Rail Kits APC SmartUPS AP9625
Summary description:
The APC SmartUPS AP9625 2 Post Rail Kits are designed for easy installation of SmartUPS and SmartUPS RT units in 2 post racks. With a maximum weight capacity of 2.27 kg, these rail kits ensure secure mounting and stability for your UPS systems. Ideal for data centers and server rooms, they provide reliable support and efficient space management.