The enclosure shall house, organize, manage and protect fiber optic cable, terminations, splices, connectors and patch cords. Enclosure shall accommodate all HD Flex™ cassettes, fiber adapter panels (FAP), trunk cables, connectors and patch cords. Enclosure shall provide front access with drawers that slide out into two locked positions, regardless of how many enclosures are stacked together. Enclosure trays shall allow for half of the tray to operate independently, an ideal option for redundant networks. Enclosure shall allow cassettes and FAPs to be installed by dropping them into the front of the enclosure tray or sliding them into the rear of the enclosure tray which allows each individual cassette/FAP to be removed with minimal disruption to other cassettes/FAPs. Enclosure shall be constructed of steel material. Enclosures are ordered in either 6-port or 12-port configurations. Enclosure shall be able to be adapted to accept either 6-port cassettes and 12-port cassettes.