Active ceiling mount telecommunications enclosure. Fully-hinged, drop down doors support installed equipment and open to provide safe, easy access. Enclosures install flush with the drop ceiling for clean look. Plenum-rated. Two edge-protected cable access ports with fire-rated foam sealing kit. AC power ready. 9 CFM fan with transformer provides more than 100 air changes per hour. 2 x 2 ft enclosure houses one removable rack-mount assembly with 2RU active, 5RU (2U+1U+2U) of patch panels and wire management. 2 x 4 ft enclosure houses two removable rack-mount assemblies, each with 4RU active (8U total), 10RU divided (2U+1U+2U) of patch panels and wire management.