Upgrade your compact 10‑inch (EIA‑310) mini‑rack with a purpose‑built 4U fan panel that holds a single 140 mm Noctua NF‑A14 (or compatible Arctic P14) fan for whisper‑quiet cooling. The panel is printed in premium black PETG, a heat‑resistant filament that tolerates temperatures up to ~75 °C, making it safe next to warm drives or AI mini‑PCs. It matches the standard 124.5 mm hole pattern and 137 mm opening used by GeeekPi, DeskPi RackMate and other 10‑inch racks, so it slides in perfectly without extra hardware. Each panel is made to order on commercial‑grade FDM equipment in the USA; normal layer lines are visible but do not affect airflow. Ships within 1‑3 business days, ready to mount with M4 screws (not included). Enjoy reliable, low‑noise airflow without the bulk of a full‑size fan cage. Fan not included.