The HBL3 is a 3-space blank panel from the HBL Series, designed to cover unused spaces in equipment racks. It is constructed from lightweight yet durable 1/8-inch thick aluminum, which is easy to machine for custom modifications. This 3U panel measures 5.25 inches in height and 19 inches in width, making it compliant with standard EIA/TIA racks. The HBL3 features a high-aesthetic black brushed and anodized finish, ideal for maintaining a clean, professional appearance and managing airflow in data centers and AV installations.