Abstract: A cabinet for interconnecting and storing optical fibers. The cabinet includes a plurality of left side members and right side members, each of which extends generally horizontally. A plurality of trays are slidably situated in the cabinet between the respective left and right side members. Each tray includes a generally flat base and open sides. The open sides permit optical fibers to be introduced into the tray from any position along the side of the tray. A gap is defined between each side member and the side members immediately above and below it. Each gap extends between the entire length of each side member from the front of the cabinet to the back. The gap provides adequate clearance for fibers introduced into the trays to move along the length of the gap when the tray is slid in and out of the cabinet.