This is a fixed rectangular enclosure equipped with a slide‑rail cover plate. The sides and bottom are all fitted with mounting holes, allowing for quick, secure assembly via screws. Inside the enclosure, four raised platforms elevate components, creating effective airflow channels that enhance heat dissipation and improve cooling efficiency. The bottom features dedicated hexagonal screw holes, while the internal corner screw holes are designed to run through the entire structure, facilitating through‑bolt fastening or stackable installations. The slide‑rail cover plate aligns precisely with the enclosure body, featuring built‑in locating protrusions at the base that ensure smooth push‑pull operation and secure, tight engagement—guaranteeing stability and safety during use.